Fort de Chartres was a French
fortification
A fortification (also called a fort, fortress, fastness, or stronghold) is a military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from Lati ...
first built in 1720 on the east bank of the
Mississippi River
The Mississippi River is the main stem, primary river of the largest drainage basin in the United States. It is the second-longest river in the United States, behind only the Missouri River, Missouri. From its traditional source of Lake Ita ...
in present-day
Illinois
Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...
. It was used as the administrative center for the province, which was part of
New France
New France (, ) was the territory colonized by Kingdom of France, France in North America, beginning with the exploration of the Gulf of Saint Lawrence by Jacques Cartier in 1534 and ending with the cession of New France to Kingdom of Great Br ...
. Due generally to river flooding, the fort was rebuilt twice, the last time in
limestone
Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...
in the 1750s in the era of French colonial control over
Louisiana
Louisiana ( ; ; ) is a state in the Deep South and South Central regions of the United States. It borders Texas to the west, Arkansas to the north, and Mississippi to the east. Of the 50 U.S. states, it ranks 31st in area and 25 ...
and the
Illinois Country
The Illinois Country ( ; ; ), also referred to as Upper Louisiana ( ; ), was a vast region of New France claimed in the 1600s that later fell under Spanish and British control before becoming what is now part of the Midwestern United States. Whi ...
.
The
magazine
A magazine is a periodical literature, periodical publication, print or digital, produced on a regular schedule, that contains any of a variety of subject-oriented textual and visual content (media), content forms. Magazines are generally fin ...
(ammunition storehouse) of the fort is believed to be the oldest surviving building in Illinois. A partial reconstruction now exists of the limestone fort and the site is preserved as an
Illinois
Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...
state park, four miles (6 km) west of
Prairie du Rocher in
Randolph County, Illinois
Randolph County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 30,163. Its county seat is Chester.
Owing to its role in the state's history, the county motto is "Where Illinois Began." ...
. Located on the floodplain area that became known as the
American Bottom, the site is south of modern
St. Louis
St. Louis ( , sometimes referred to as St. Louis City, Saint Louis or STL) is an independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi and the Missouri rivers. In 2020, the city proper had a populatio ...
. The forts were placed on the
National Register of Historic Places
The National Register of Historic Places (NRHP) is the Federal government of the United States, United States federal government's official United States National Register of Historic Places listings, list of sites, buildings, structures, Hist ...
and recognized as a
National Historic Landmark
A National Historic Landmark (NHL) is a National Register of Historic Places property types, building, district, object, site, or structure that is officially recognized by the Federal government of the United States, United States government f ...
on October 15, 1966.
It was named one of the
contributing properties to the
French Colonial Historic District in 1974, along with other French-influenced sites such as the
Creole House, the
Pierre Menard House, the
Kolmer Site (a former Indian village), and
the site of Fort Kaskaskia.
The name of the fort honored
Louis, duc de Chartres, son of the
Regent
In a monarchy, a regent () is a person appointed to govern a state because the actual monarch is a minor, absent, incapacitated or unable to discharge their powers and duties, or the throne is vacant and a new monarch has not yet been dete ...
of France. The state historic site today hosts several large re-enactments at the fort of colonial-era civil and military life each summer.
History

French rule
On January 1, 1718, the French government granted a trade monopoly to
John Law and his
Company of the West. Hoping to make a fortune mining precious metals, the company built a fort to protect its interests. The original wooden fort was built in 1718–1720 by a French contingent from New Orleans, led by
Pierre Dugué de Boisbriant.
When administration of the Illinois Country was moved from
Quebec City
Quebec City is the capital city of the Provinces and territories of Canada, Canadian province of Quebec. As of July 2021, the city had a population of 549,459, and the Census Metropolitan Area (including surrounding communities) had a populati ...
to
New Orleans
New Orleans (commonly known as NOLA or The Big Easy among other nicknames) is a Consolidated city-county, consolidated city-parish located along the Mississippi River in the U.S. state of Louisiana. With a population of 383,997 at the 2020 ...
, governance was transferred to the
Company of the Indies. The fort was built to be the seat of government and to control the
Indians of the region, particularly the
Meskwaki
The Meskwaki (sometimes spelled Mesquaki), also known by the European exonyms Fox Indians or the Fox, are a Native American people. They have been closely linked to the Sauk people of the same language family. In the Meskwaki language, th ...
. The original fort was a palisade of logs with two
bastion
A bastion is a structure projecting outward from the curtain wall of a fortification, most commonly angular in shape and positioned at the corners of the fort. The fully developed bastion consists of two faces and two flanks, with fire from the ...
s at opposite corners.
Within five years, flooding from the Mississippi had left the original fort in bad condition.
Construction of a second fort further from the river, but still on the flood plain, began in 1725. This fort was also made of logs and had a bastion at each of the four corners.
The second wooden fort deteriorated somewhat less rapidly but by 1742 was in bad repair. In 1747 the French garrison moved to the region's primary settlement to the south at
Kaskaskia
The Kaskaskia were a historical Indigenous people of the Northeastern Woodlands. They were one of about a dozen cognate tribes that made up the Illiniwek Confederation, also called the Illinois Confederation. Their longstanding homeland was in ...
. The French debated where to rebuild the fort. When rule of the area reverted to the French crown in the 1730s, officials began to discuss construction of a stone fortress. The government in New Orleans wanted to move the garrison permanently to Kaskaskia, but the local commandant argued for a location near the original site.

The government decided to rebuild a fort in stone near the first forts rather than at Kaskaskia. Construction began in 1753 and was mostly completed in 1754.
The limestone fort had walls 15-ft (3 m)-high and 3-ft (1 m)-thick, enclosing an area of 4 acres (16,000 m
2).
The stone for construction was quarried in bluffs about two or three miles (4 km) distant and had to be ferried across a small lake.
In August 1751 Francois Saucier was summoned from Mobile to New Orleans by Governor Vaudreuil for a special assignment. This assignment was for the construction of a new fort to accommodate the garrison of additional troops that France was sending to the colony. The new fort was to replace the old wooden Fort de Chartres and was to be constructed of stone at the settlement. The main purpose of the new fort was to impress the warring Chickasaw Tribe of the area and to check and halt the progress of the British in the area. This new assignment required Francois to immediately journey to his new post in Illinois without the benefit of first returning home to Mobile for personal necessities.
The original intention of the French Government was for Francois and his crew to build the new stone Fort de Chartres in Kaskaskia. The Governor of the territory, Vaudreuil, eventually made the decision to leave the Fort where it stood. Due to problems of flooding it was decided to move it a little over one half mile north of the old fort. Upon arriving he took on the task of surveying the terrain, its situation and advantages, in order to make recommendations on construction. Once his plans were completed he sent them as instructed to the governor in New Orleans with all specifications and estimated costs. After some time of deliberations by the French government and many delays and discussions of the cost of construction as planned by Francois, a scaled down version of the fort was finally given approval and Francois was then given permission to start its construction. During this period of waiting for approval from France, preparations were being conducted by Francois and his crew of soldiers as he had been instructed by the governor for the forts construction, including clearing the land, felling of trees for timber and other site preparations. After the many earlier delays, the budget for building the new fort was finally approved and they proceed with the construction of Fort de Chartres.
British rule
In 1763 the
Treaty of Paris was signed following the
Seven Years' War
The Seven Years' War, 1756 to 1763, was a Great Power conflict fought primarily in Europe, with significant subsidiary campaigns in North America and South Asia. The protagonists were Kingdom of Great Britain, Great Britain and Kingdom of Prus ...
(
French and Indian War
The French and Indian War, 1754 to 1763, was a colonial conflict in North America between Kingdom of Great Britain, Great Britain and Kingdom of France, France, along with their respective Native Americans in the United States, Native American ...
) and the French transferred control of the
Illinois Country
The Illinois Country ( ; ; ), also referred to as Upper Louisiana ( ; ), was a vast region of New France claimed in the 1600s that later fell under Spanish and British control before becoming what is now part of the Midwestern United States. Whi ...
east of the Mississippi to
Great Britain
Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...
. (Spain had been granted the western part of the Illinois Country—also known as ''Upper Louisiana''—in the 1762
Treaty of Fontainebleau.) The stone fort had served as center of French administration of the region for only twenty years.
The British had difficulty getting a regiment to their newly acquired fort, but on October 10, 1765, a small detachment of the
42nd Regiment of Foot commanded by Captain
Thomas Stirling took control of the fort and surrounding area. The 42nd was shortly replaced by the 34th Foot. French Canadian settlers were ordered to leave or get a special license to remain. Many
Canadien
French Canadians, referred to as Canadiens mainly before the nineteenth century, are an ethnic group descended from French colonists first arriving in France's colony of Canada in 1608. The vast majority of French Canadians live in the provi ...
settlers moved to the more congenial culture of St. Louis. The
34th Regiment of Foot renamed the installation Fort Cavendish, after its colonel. However, the post was known as Ft. Chartres from 1768 on, after the 34th were replaced by the
18th Regiment of Foot under the command of Lt. Col. Wilkins. The British abandoned the post in May 1772 when the majority of the 18th Foot was ordered back to Philadelphia. A small party under Capt Hugh Lord remained at Kaskaskia until May 1776.
Ruin
The Mississippi continued to take its toll after the fort was abandoned. In 1772 the south wall and bastion fell into the river. The remaining walls deteriorated, and visitors noted trees growing in them by the 1820s. Locals carted away stones for construction over the years. By 1900 the walls were gone. The only part of the original fort that remained was the stone masonry powder magazine.
Reconstruction

The State of Illinois acquired the ruins in 1913 as a historic site and restored the powder magazine in 1917. The powder magazine is thought to be the oldest existing building in the state of
Illinois
Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...
. In the 1920s the foundations of the fort's buildings and walls were exposed. In the late 1920s and through the 1930s, the US
WPA rebuilt the gateway and two stone buildings.
A combination museum and office building, constructed in 1928 on the foundation of an original fort building, houses exhibits depicting French life at Fort de Chartres. The large stone "Guards House", reconstructed in 1936, contains a Catholic chapel furnished in the style of the 1750s, along with a priest's room, a gunner's room, an officer-of-the-day room, and a guard's room. Also on the grounds are an operating bake oven, a garden shed built of upright logs in French Colonial ''
poteaux-sur-sol'' (French: "post on sill") construction, and a kitchen garden with raised beds of produce typical of French 18th-century Illinois.
Partial reconstruction of the fort's walls on the original foundations followed in 1989.
"Fort de Chartres"
Illinois Historic Preservation Agency site, Retrieved on January 24, 2008 The frames of some additional buildings were erected as a display of the post-and-beam construction techniques used for the originals. Other buildings' foundations and cellars were exposed for educational display as well.
Today the site has a museum and small gift shop. It plays host each June to a Rendezvous that is said to be one of the largest and oldest in the country, celebrating frontier
A frontier is a political and geographical term referring to areas near or beyond a boundary.
Australia
The term "frontier" was frequently used in colonial Australia in the meaning of country that borders the unknown or uncivilised, th ...
French and Indian culture.
The site is protected by modern levee
A levee ( or ), dike (American English), dyke (British English; see American and British English spelling differences#Miscellaneous spelling differences, spelling differences), embankment, floodbank, or stop bank is an elevated ridge, natural ...
s, but the Mississippi River is still an occasional menace. The flood of 1993 breached the levee and sent waters fifteen feet deep to lap at the top of the walls.
See also
* List of French forts in North America
References
External links
Fort De Chartres Official Site
{{DEFAULTSORT:Fort De Chartres
Chartres
Chartres () is the Prefectures in France, prefecture of the Eure-et-Loir Departments of France, department in the Centre-Val de Loire Regions of France, region in France. It is located about southwest of Paris. At the 2019 census, there were 1 ...
French colonial settlements of Illinois Country
Chartes
History museums in Illinois
Military and war museums in Illinois
Museums in Randolph County, Illinois
Illinois State Historic Sites
Military facilities on the National Register of Historic Places in Illinois
National Historic Landmarks in Illinois
National Register of Historic Places in Randolph County, Illinois
Louisiana (New France)
French-American culture in Illinois
French colonial architecture in the United States
Chartres
Chartres () is the Prefectures in France, prefecture of the Eure-et-Loir Departments of France, department in the Centre-Val de Loire Regions of France, region in France. It is located about southwest of Paris. At the 2019 census, there were 1 ...
1720 establishments in New France
Poteaux-sur-sol framing
Military installations established in 1720
1772 disestablishments in the British Empire
Military installations closed in 1772
Colonial architecture in Illinois