This semi-spooky remnant of an abandoned hotel provides fantastic views.

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

This tiny structure was built by the creator of the Brooklyn Bridge.

The most playful of the life-sized statues that make up Singapore's "People of the River."

A Buddhist theme park brings you a Buddhist version of Hell.

A completely round house designed for the Atomic Age.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

Mysterious rocks that ring musically when struck.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A toxic ghost town sitting atop a massive coal fire.

This dramatic rail curve was once the target of a failed Nazi attack.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

A park full of outsider art, created by college students studying outsider art.

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

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

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.