These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Bacteria and algae give the salty water its bubblegum hue.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The most famous location in China was home to whole dynasties worth of imperial rulers.

With over 12,000 different species of plants, this botanical garden is Japan's oldest and most diverse.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

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

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

In paradise, feral pigs have claimed an island all to themselves.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

A beautifully eclectic mix of architectural styles.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

An underground city of salt.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

A part of the world's largest marsh seems to be growing bright red Martian grass.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.