A hidden "place of interment for gentlemen."

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

A snapshot of the city's fascinating voodoo culture.

The second oldest continuously operating bar in Louisiana.

Introducing the Green Fairy to her fawning masses.

The curiosities and wonders of pharmacy in a delightful historic building.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

A prohibition era watering hole for the police.

A hip bar decorated with walls of golden skulls.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

An original apothecary from 1792.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

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

Tucked in the back of this amazing antique store is an important piece of medical history.

Walk into the 19th century without leaving Brooklyn.

This innocent-looking townhome is actually a subway exit.

Become a prohibition rebel.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

Ever wanted the laymen's version of your credit card fine print?

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

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

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