This is the longest of four tunnels engineered by Claudius Crozet to cross the Blue Ridge Mountains in Virginia, and it was the longest tunnel in the US at the time of its completion.

Eastern State was the world’s first true penitentiary. It was operational from 1829 to 1971 and is renowned for its innovative architecture and penal philosophy.

Fort Totten, in Bayside, NY is a tangible reminder of New York City’s once powerful harbor defense system.