A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

This wooden chair dates possibly back to the 15th century, and commemorates a local legend.

The 16-foot sculpture of a hand looks out from his perch on top of an art gallery.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

This park is home to California's first oil boomtown, with structures that have stood for more than a century.

Tell this pair of "love-inviting" cats in Ginza your romantic hopes.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

This library dates back to the late 17th century and was one of the first public lending libraries in England.

The ritual has been performed uninterrupted for nearly 700 years.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

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

Morocco's largest Jewish cemetery.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

Vast stretch of tide-pools with a unique Moroccan charm.

God's Saharan sandbox of wrath.