17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

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

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

The mall's looks were inspired by the cowboy extras who used to meet up—and cause real trouble—at this Hollywood hub.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The ruins of a paper mill destroyed during the Civil War still tower over a tributary of the Chattahoochee River.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

A reminder to choose water over wine since 1888.

A tiny islet just off Long Island offers a wealth of infectious curiosities.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

A toxic ghost town sitting atop a massive coal fire.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

This former crime corner has been turned into an eclectic community center.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.