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

A unique walk through hundreds of cactus plants, including some that stretch over 8 feet tall.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

The most important and best preserved remnant of West Africa's powerful Songhai Empire.

A hotel with a rich Wild West history of miners and bootleggers.

Tools, pottery, and mummies showcase the history of La Palma's native people.

Hidden in the highlands of Guatemala, a small shrine venerates a forbidden folk saint.

Sited in an Inner Mongolian desert are the remnants of an important trade stop along the Silk Road.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

This volcano in the Philippines is believed to have miraculous healing powers.

This legendary urban waterfall creates a dazzling display of rainbows.

An allegedly haunted mansion with a tragic, tawdry past.

This underground museum highlights the history of Mexico City's subway system.

Thousands of ancient rock carvings are scattered just off the highway.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

The historic bar where local ship captains, traders, and gold miners would come together to do business a century ago.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

A museum dedicated to the history and exploration of both popular music and science fiction.