The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

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

A hand-built folk art installation covered with messages of God's love.

The site of the climactic scene from the classic horror film is now a historic landmark.

Continuing the tradition of the dime museum in style.

A university observatory dome painted to resemble the beloved 'Star Wars' droid.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

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

Stroll through a wonderland of stupendous moss-covered trees.

The seamy, underground secrets of Portland's criminal past.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

A giant Troll lurks under one of Seattle's oldest bridges.

A winding path built in secret on the edge of the continent.

A trash dump made beautiful by nature's power.

One man's homage to the sun continues to grow like a glass fractal.

America's most famous piece of self-built architecture.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A layered tribute to the work of mosaicist Isaiah Zagar.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.