This is the beginning of Prospect Park's totally man-made watercourse, which is mostly fed by a pipe, hidden behind the falls, that connects to the city's water supply system. (In the 19th century, the park's water came from a well; as we saw last year, the old wellhouse is still standing.)
to St. Vincent's Hospital, which closed in 2010. St. Vincent's played a major role in treating those injured on 9/11, and one of its walls was transformed into an impromptu community memorial to victims of the attacks.
(Spotted on an unofficial late-night stroll through Greenwich Village.)
