This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Pilgrimage site for star-crossed lovers.

The celebrated eyesore created by starry-eyed sweethearts.

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

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Macabre astrological automaton clock dating to the late 1400s.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A church of bones, decorated with 40,000 human skeletons.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

Colorful umbrella-covered trees in Singapore's Little India look straight out of Dr. Seuss.

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

Singapore's landscaping project is home to 18 incredible Supertrees.

This ambiguous pig shrine is actually a monument to a beloved queen.

The bank's whimsical shape was inspired by a child’s toy.

The golden Buddha statue at the Wat Muang Monastery is the tallest in Thailand, and the ninth-tallest in the world.

A white Buddhist temple with a golden restroom.

Cavemen, elephants, and eagles greet passengers driving through the town's main intersection.

A dazzling temple featuring a towering 12-meter golden Buddha.

Antiques shop filled with all manner of curious collectibles.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.