The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

These aggressively sustainable art homes look like something out of 1970's science fiction.

When ecosystems collide in the arid Southwest.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The abandoned coal loading dock is a canvas for unsanctioned art.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

The oldest surviving botanic garden in the United States.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

Huge masonic hall in Philadelphia with lavishly themed rooms.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Where America's first doomsday cult awaited the end of the world.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Restaurant in a 1741 farmhouse that touts the story of its haunting on its menus.

Expertly restored pinball machines as far as the eye can see.

A quiet spot commemorating two naturalists who had to choose between love and the university at which they both taught.

One of 100 “Whaling Wall" murals painted in 13 different countries by a renowned marine life artist.

This small, unassuming, nursery plays hosts to some unique plant life.

The summer home and later final residence of acclaimed American sculptor Augustus Saint-Gaudens.

The gravestones in this historic cemetery are carved with mysterious faces.

One of the few brewers in the U.S. experimenting with hop-free beers.

This New England drive-in was built to straddle the border between two states.

Nature and religion are reunited at this unconventional church in the forest.