Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

An artist's cute bronze subway sculptures belie his violent artistic past.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A once grand hotel is being retaken by the wilderness it once capitalized on.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

The "Seinfeld" diner.

A celebration of capitalism in Midtown.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

An abandoned castle owned and ignored by Masons carries a cursed history.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A dilapidated dock tells the story of Titanic's missed arrival.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Read a book next to a Midtown waterfall.

A hip bar decorated with walls of golden skulls.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Elevated freight railway turned wildly successful urban park.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The world’s largest underground marble quarry is hiding in Vermont.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This uninhabited island in Maine is home to various works of art left by visitors over the years.

A decidedly out of place statue memorializes the Blues Brothers characters at this water bottling plant.