Coastal fortifications

Azov (, ), previously known as Azak (Turki/Kypchak: ),

Kronborg () is a castle and historical stronghold in the town of Helsingør, Denmark. Immortalised as Elsinore in William Shakespeare's play Hamlet, Kronborg is one of the most important Renaissance castles in Northern Europe. It was inscribed on the UNESCO World Heritage List in 2000.

Suomenlinna (), or Sveaborg (), is a sea fortress composed of eight islands, of which six have been fortified. Located about southeast of the city center of Helsinki, Finland, Suomenlinna is a popular destination for both tourists and locals, who enjoy it as a picturesque picnic site.

explosive weapon for use in seas and waterways, triggered by the target's approach

extensive system of coastal fortifications built by Nazi Germany

island in Gambia

Ambleteuse (; ; Picard: Imbelteuse) is a commune in the Pas-de-Calais department in northern France.

fort in Charleston, South Carolina

point of attack during Operation Overlord in World War II

military service branch equipped with artillery in defense of territory against attack from the sea

is a star fort in the Japanese city of Hakodate on the island of Hokkaido. The fortress was completed in 1866. It was the main headquarters of the short-lived Republic of Ezo.

small defensive fort

fort on Cape Breton Island in Nova Scotia

maritime navigation aid system

Fårösund is a locality situated on the Swedish island of Gotland with 800 inhabitants in 2014. The village can be reached by car from Visby. The island of Fårö can be reached by ferry from Fårösund.

military operations and doctrine regarding protection of coastlines against military attack

fortress in China

Historic hotel in Havana, Cuba

United States fort in Baltimore, Maryland

fortress and museum in Azov, Rostov Oblast, Russia

geographical object

island in the South China Sea

Coastal defences of Corsica

August 1854 Crimean War battle

decommissioned coastal artillery battery in Sentosa, Singapore

Fortress near Loviisa, Finland

thumb|250px|right|Jinoshima, Okinoshima, and Awaji Island thumb|Views of Tomogashima (1798)

Russian fortification line

ezo fortress in Hokkaidō, Japan

artillery fortifications built to defend the southern coast of England by Henry VIII

fort in Alabama

Battery of coastal artillery built by Nazi Germany during World War II, located near Cape Gris-Nez, Pas de Calais, France.

well listed by the Institute of Artistic and Cultural Heritage of Bahia in the city of Salvador, Bahia

nature reserve on the North Sea coast of England

thumb|Christianspris Christianspris or Frederiksort was a Danish fortification somewhat north of the then Danish city of Kiel. In 1632 the Danish king Christian IV initiated the works of making a fortification on a land tongue on the West shore of the Kielerfiord on the Jernved peninsula. The purpose was to secure this land against German troops during the 30-years War. However, the town was short lived. Christian IV founded many towns and cities. The town is notable for being captured by the Swedes during the Torstenson War during the Jutland Campaign in January of 1644

partially-reconstructed 18th century fort in Alabama, United States; site of a Spanish victory in the American Revolutionary War (March 14, 1780)

fortress in Kotka, Finland

artillery battery in Valletta, Malta

coastal batteries used by the Soviet Union in the Crimea during World War II

museum in Blåvand, Denmark

fortified colonial tower, near downtown Havana

U.S. Army installation in Brooklyn, New York

Russian fortifications in World War I

coastal star fort in New York City

17th-century Japanese coastal observatory structures

fort in Newfoundland and Labrador, Canada

colonial Singapore defensive structure