Trångsund Fortress (; ) is a naval fort by the

Vyborg Bay Vyborg Bay (; ; ) is a deep inlet running northeastward near the eastern end of Gulf of Finland in the Baltic Sea. The city of Vyborg is located near the head of the gulf. The Monrepos Park is considered a jewel of the bay and a major dra ...

in the town of

Vysotsk Vysotsk (; ; ) is a coastal types of inhabited localities in Russia, town and a seaport in Vyborgsky District, Leningrad Oblast, Vyborgsky District of Leningrad Oblast, Russia, located on the Karelian Isthmus, on the eastern shore of the Vyborg Bay ...

Leningrad Oblast Leningrad Oblast (, ; ; ) is a federal subjects of Russia, federal subject of Russia (an oblast). The oblast has an area of and a population of 2,000,997 (2021 Russian census, 2021 Census); up from 1,716,868 recorded in the 2010 Russian census ...

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

. It was established by

Peter the Great Peter I (, ; – ), better known as Peter the Great, was the Sovereign, Tsar and Grand Prince of all Russia, Tsar of all Russia from 1682 and the first Emperor of Russia, Emperor of all Russia from 1721 until his death in 1725. He reigned j ...

in 1710 to secure the town of

Vyborg Vyborg (; , ; , ; , ) is a town and the administrative center of Vyborgsky District in Leningrad Oblast, Russia. It lies on the Karelian Isthmus near the head of Vyborg Bay, northwest of St. Petersburg, east of the Finnish capital H ...

which was captured from

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

during the

Great Northern War In the Great Northern War (1700–1721) a coalition led by the Tsardom of Russia successfully contested the supremacy of the Swedish Empire in Northern Europe, Northern, Central Europe, Central and Eastern Europe. The initial leaders of the ant ...

. The fort is located about 12 kilometres south of Vyborg in the islands of Vysotsky and Maly Vysotsky. Trångsund Fortress received its present form after the

Crimean War The Crimean War was fought between the Russian Empire and an alliance of the Ottoman Empire, the Second French Empire, the United Kingdom of Great Britain and Ireland, and the Kingdom of Sardinia (1720–1861), Kingdom of Sardinia-Piedmont fro ...

in the 1860s. The structures dating back to the early 18th Century are no longer visible. In the early 1900s, the fort was intended to be a part of the Peter the Great's Naval Fortress but it was disarmed by the

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

. During the 1918

Finnish Civil War The Finnish Civil War was a civil war in Finland in 1918 fought for the leadership and control of the country between Whites (Finland), White Finland and the Finnish Socialist Workers' Republic (Red Finland) during the country's transition fr ...

the Trångsund Fortress was occupied by the local Women's Red Guard.

References

{{coord, 60.635195, N, 28.573337, E, scale:80000_region:RU, display=title Forts in Russia History of the Karelian Isthmus 1710 establishments in Russia Cultural heritage monuments in Leningrad Oblast