Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

When ecosystems collide in the arid Southwest.

The highest bridge in America was built for an almost unnervingly small amount of money.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

A large sculptural artwork and garden in Escondido, California.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

10,000 flowered plants bloom in the City of Roses.

Only known mainland rookery of the threatened Stellar sea lion.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A local student's chance encounter with Keith Haring led to the creation of one of Europe's largest murals.

Anatomical cabinet holds unexpected treasures.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Five candy-colored villages on the Italian Riviera.