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.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

A New Hampshire grave with a grudge.

A quiet country churchyard holds a monument to the last known sin-eater in England.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Two massive rock outcroppings on the Oregon coastline.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

The legendary building that needed ghostly approval before being built.

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

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

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

The real faces of Venice beach captured on Romanesque columns.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.