The Delaware Boundary Markers

historic district A historic district or heritage district is a section of a city which contains historic building, older buildings considered valuable for historical or architectural reasons. In some countries or jurisdictions, historic districts receive legal p ...

is located along the state boundary lines between

Delaware Delaware ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic and South Atlantic states, South Atlantic regions of the United States. It borders Maryland to its south and west, Pennsylvania to its north, New Jersey ...

and

Maryland Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...

, and between

and

Pennsylvania Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...

. The district includes 94 contributing sites along the

Mason–Dixon line The Mason–Dixon line, sometimes referred to as Mason and Dixon's Line, is a demarcation line separating four U.S. states: Pennsylvania, Maryland, Delaware and West Virginia. It was Surveying, surveyed between 1763 and 1767 by Charles Mason ...

and includes the

Transpeninsular Line The Transpeninsular Line (at approximately 38°27′ N) is a surveyed line, the eastern half of which forms the north–south border between Delaware and Maryland. The border turns roughly north from the midpoint of the line towards the Twelve-M ...

, Post Marked West site, Tangent Line, the Arc Corner, and the

Twelve-Mile Circle The Twelve-Mile Circle is an approximately circular arc that forms most of the boundary between Delaware and Pennsylvania. It is a combination of different circular arcs that have been feathered together. It is nominally a circle with a variab ...

. With The district was added to 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 ...

on February 18, 1975, for its significance in engineering and politics/government.

Description

The markers are mainly on three parts of the Delaware boundary. First, the southern boundary with Maryland along the Transpeninsular Line from Fenwick Island to the Midpoint Marker, the first crownstone set by Mason and Dixon. Second, the western boundary with Maryland from the Transpeninsular Line Midpoint Marker to the boundary with Pennsylvania at the Tri-State Monument. Third, the northern boundary with Pennsylvania, the Twelve-Mile Circle. In addition, the starting measurement point, the Post Marked West, and the boundary from the Arc Corner Monument to the Tri-State Monument are included in the district.

Gallery

File:DE-MD-PA Tri-State Monument - detail looking northwest.jpg, Delaware–Maryland–Pennsylvania Tri-State Monument File:Arc Corner Monument, DE-PA, detail.jpg, Arc Corner Monument File:Mason and Dixon marker place.jpg, Post Marked West site

References

External links

* * Journey to Mark the First State's Boundaries * {{National Register of Historic Places in Pennsylvania Historic districts on the National Register of Historic Places in Delaware Historic districts on the National Register of Historic Places in Maryland Historic districts on the National Register of Historic Places in Pennsylvania National Register of Historic Places in Sussex County, Delaware Mason–Dixon line Borders of Delaware Borders of Maryland Borders of Pennsylvania Boundary markers 1760s establishments in Delaware

Description

Gallery

See also

References

External links