The Habsburgs' royal collections of art and wonders.

The topiary maze at the Habsburg hunting lodge.

A spectacular cave and a beguiling lake.

A Hungarian optometrist's charming collection of Asian art and curiosities.

A museum of tiny buildings in the tiny country of Andorra.

A 20th-century picture show in 3-D.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

A mythically themed self-built sculpture park.

A self built castle built by a salt worker in Brazil.

Grottoes, sculptures, and recycled ceramics permeate what was once just a small farm in France.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A musical instrument played by the sea.

A museum dedicated to exhibiting remarkable outsider art.

A modern zoetrope on the New York City subway.

An intricately decorated tiny place of worship.

A village of art and exotic creations.

Macabre astrological automaton clock dating to the late 1400s.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

"World machine" built by an untrained Austrian farmer.

A creepy steel gremlin has protected the Bay Bridge since 1989.

A preserved dragon's rib that remembers the legend of the founding of the city of Atessa.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

This former crime corner has been turned into an eclectic community center.