A Collegiate Gothic quadrangle that surrounds an 18th century secondary school whose financing came from the likes of Alexander Hamilton and Aaron Burr, among others.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

This impressive mansion in Vinegar Hill has some mysterious details in its architecture.

This innocent-looking townhome is actually a subway exit.

More gold than anywhere else, ever.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A huge musical instrument played by the ocean.

A large instrument played by the wind.

A reproduction of earth's many biomes.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Where the lovelorn find a home for their sentimental keepsakes.

The mysterious round rocks of Schooner Gulch.