Op-art architecture designed for happiness.

A spherical "micro-nation" in the heart of Vienna.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

The first park built over a freeway is a brutalist masterwork.

A walk through the historic city center, under the streets of Seattle.

A colorful street named for the legendary Australian rock band.

The ruins of a once prosperous power station have become a mouldering seaside gem.

Come for the flowers, stay for the bats!

This giant Christ took first place in South America's religious arms race.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

Hang out with thousands of butterflies in one of the world's largest such enclosures.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

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

Children's author May Gibbs's beloved stories about the tiny, human-like "Gumnut Babies" are immortalized in bronze.

The 18th-century home was disassembled into 253 cases and brought all the way from the other side of the world.

Taxidermy of the racing horse with a huge heart, who inspired hope in the Depression.

A special train service transported Sydney's dead from this station to "Necropolis Receiving Houses" at Rookwood Cemetery.

The once-dying town of Sheffield, Tasmania has reinvented itself as a village of painted wonders.

Dedicated to an "Unknown Man," this grave holds either the remains of a lovelorn suicide or a Cold War spy.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.