This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

An enormous, inside-out glass globe built in 1935.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A hidden three-foot-wide house separates these two regal churches.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Become a prohibition rebel.

This innocent-looking townhome is actually a subway exit.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

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

Ride the subways of yesteryear.