One of the windiest peaks in Crimea is home to an incredible set of cable bridges.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

The massive cave church of Cairo's Zabbaleen community is one of the largest Christian churches in the Middle East.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

This pair of small sea rocks has been "wed" using rope and ancient Shinto tradition.

The beautiful baroque library of the Hapsburg empire.

A city built from mud and known as the "Manhattan of the desert."

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

A magical place that lets you play in and explore the world of Studio Ghibli.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

An ordinary pond with fish from out of this world.

The Tallahassee Airport serves over half a million passengers a year and is home to some permanent residents too.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

This sandstone mansion was the home of two of Oregon's most important pioneers.

A place as enchanting as the journey to reach it is harrowing.

A house carved into a rock in the 1940s.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

A ghost town that held steady longer than most, but finally gave up the ghost.

This tiny little cave was said to have been a refuge for a saint with a glowing arm.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

Once the most densely populated place in the world, this island is now a ghost town.

These stairs were built to accommodate royals mounted on elephants.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.