2. Croton Aqueduct Manhole Cover
A variety of original Croton Aqueduct manhole covers are scattered throughout the city. In Thomas Jefferson Park, along the walkway off 112th Street and 1st Avenue, the Croton Aqueduct manhole, dating from 1866 is one of the oldest manholes in New York City. Another is located at 40th Street and 8th Avenue, and one was formerly next to the Puck Building on Jersey Street in Soho before street was paved over.