Cat art as far as the eye can see.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

This wondrous waterfall rushing down a green-covered mountain wasn't discovered until 2010.

Legends surround an ancient tree trunk riddled with nails for good luck.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

This art center is way beyond your average pumpkin-carving operation.

A 60-room castle constructed by a horse-racing heir.

A floating cat sanctuary on an Amsterdam canal.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

Georgia's highest point was given its strange name thanks to a simple translation error.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

The house that Southern rock built now stands as a monument to one of the genre's favorite families.

Could this grave be the true resting place of legendary gunfighter "Doc" Holliday? Unclear.

Giant instrument-shaped home in Fayetteville, Georgia.

A vision of beautiful Hindu architecture in the middle of the American South.