These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

According to local myth this cemetery is half evil spirits, half good—split down the middle.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

A former major munitions plant that has been converted into a sprawling art space.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Bouncing, delightful, mechanical art at the MIT Museum.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

This is the house that spite built.

One man's psychedelic fence is painted with his cacophonous folk art musings on the world.

A tiny monument to the classic American candy.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

Memorial to a beloved puppeteer as well as all street performers.

Impossibly life-like natural history models created out of glass by a father and son.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

Three prestigious academic collections come together to create a world-class natural history museum.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Site of the first pathological and bacteriological research facility in the United States.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

Watch the newest land on the planet form before your eyes.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This black shoreline is made up of exploded lava particles.