Category
page 1Military installations established in 1851
Fort Yuma
United States Army fort from 1851
Fort Union National Monument
national monument in the United States
Arsenal
building with modestly Gothic Revival details, located in Central Park, New York City
Citadellet
Citadellet (Citadel) was a 19th-century Norwegian fortress. The last day of military activity was in 1970. The fort was demolished in 1971.