Nine limestone rock stacks on Australia's "Shipwreck Coast."

This historic observatory contains the world's oldest refracting lens telescope.

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

Nature is leading a successful mutiny on this century-old freighter.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

Australian Lake set aglow by Noctiluca Scintillans.

This classic restaurant features a gorgeous mirror-clad room.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Once the home of a hermetic monk, this cave now houses a small church.

Why walk on this historical site when you can zoom down instead?

Beijing's World Park offers the excitement of international sites without the travel.

This working replica of the 'Friends' coffee shop is more accurate to the show than the set itself.

The world's longest outdoor escalator takes visitors to the top of China's largest dam and is also shaped like a dragon.

The miraculous hydrant that saved the Mission District in 1906.

A man-made island in scenic San Francisco Bay.

This private residence was the template for one of the most beloved television homes of all time.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

Visible below the waves are memorials to the city's Gold Rush dead.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A psychedelic labyrinth on the San Francisco bay.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An island filled with hundreds of hanging, decomposing, decapitated dolls.