Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

This mountain clearing, created during World War II for an oil pipeline, provides a view of NYC from 40 miles away.

Have a ball telling the time at this giant kinetic-energy clock.

Tucked into Pittsburgh’s North Side, the Mattress Factory is a labyrinth of permanent, room-sized installations where artists transform entire spaces into mind-bending, immersive worlds.

This mobile theater show highlights the story of Hershey through fun facts, unique stories, and plenty of candy samples.

A pair of antique trolleys are on display at one of the oldest subway stations in the United States.

This unusual subway stop was originally a real estate office.

A modern zoetrope on the New York City subway.

The secret behind these nostalgic light fixtures: They're not as old as they may seem.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

If it feels like a speakeasy, that’s because it probably was one.

Thomas Edison's home and final resting place also boasts an impressive garage, where some of the earliest electric cars are on display.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

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

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

The colonial home of Paul Revere during the American Revolution.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

This neighborhood grocery houses a treasure trove of Eastern European delights.

For more than 25 years, this Philadelphia store has been offering a wide selection of Victorian oddities and antiques.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'