U Thant Island, Man-made island in New York City.
U Thant Island is the smallest island in Manhattan, located in the East River.
The island was artificially created in 1892 during the construction of an underground tunnel.
It's named after U Thant, the third Secretary-General of the United Nations.
The island is not accessible to the public and is managed as a bird sanctuary.
Despite its small size, it has been the site of several political demonstrations.
Location: Manhattan
Population: 0
Elevation above the sea: 3 m
Material: landfill
Sources: Wikimedia, OpenStreetMap