This pebble beach is so beautiful that taking its rocks is against the law.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A bizarre house filled with an astounding array of collections.

A huge enchanting public park just outside the ancient walls of Rome.

This museum is rotten with a century of wax medical deformities.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The middle finger of modernity.

This historical Netherlands fortress still bears the marks of its single siege.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Cozy basement bar sports an inventory of over 2,000 beers.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

Some islands... they come, they go, especially on Lake Travis.

Belly up to the bar in Cowtown, don't forget to buy some boots.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.

This downtown Dallas art installation is always on the lookout.

A grove of colossal man-made flowers built to collect the sun's rays.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.