Former villa and estate of James Deering developed to preserve native tropical forests.

Where monkeys run wild and the humans are caged.

A mysterious castle built as a monument to lost love.

The site of the deadly Triangle Shirtwaist Factory Fire.

The former sign of this immortal music venue is just that--undying.

New York City's smallest piece of private property.

Elevated freight railway turned wildly successful urban park.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

One of only two commuter aerial tramways in the United States.

The former hotel where Tesla invented the radio.

Commemorating the spot where the famous scientist fed his pigeons.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Read a book next to a Midtown waterfall.

A Manhattan office building is home to the world's largest chess board.