Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The Habsburgs' royal collections of art and wonders.

Op-art architecture designed for happiness.

This belfry is all that remains of the town that was buried by a violent volcano eruption.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

One of the biggest markets in Asia, under one of the continent's largest domes.

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

Melbourne's favorite bronze dog.

Bronze statues honor the brave explorers who passed through this Antarctic gateway.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Outdoor art exhibition made of classic Tetris pieces.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

The lavish, well-preserved home of a wealthy Baba Nyonya family is now a cultural museum.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The largest collection of Indigenous Australian artifacts in the world, and the rare museum where wood-and-glass cabinets have trumped interactive exhibits.

A whimsical menagerie of creatures carved into a 300-year-old tree trunk.

The sand is such a bright white that on sunny days you practically need sunglasses to look at the ground.

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

The soaring gondola lines form the longest aerial cable car system in the world.

Though considered an eyesore by some, this boxy Brutalist high-rise plays a significant role in Sydney's past.

It took 82 years and four different plaques to finally get the story right.

Bangkok's men with dangerous jobs come here in search of protective talismans.