The world's largest and most outstanding marl lake regularly changes color.

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

A floating cat sanctuary on an Amsterdam canal.

One of Ireland's most infamous prisons for rebels including men, women and children.

Where manatees are the snowbird vacationers in these balmy Florida springs.

This quirky Arkansas wax museum does not shy away from the macabre and the grotesque.

Since the 1700s, this old barrel has acted as a post box that relies on the kindness of travelers.

This rare symbol of Eastern philosophy in the West has been created over years of painstaking construction by the local community.

Devoted Buddhists can earn enlightenment in the next life by crawling through this symbolic nostril.

The abandoned Japanese amusement park once loomed as a dystopian Disneyland.

Hot springs monkey spa in the middle of Hell's Valley.

An exquisite tunnel of cascading flowers.

This historical theme park celebrates all things noodle.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

A huge musical instrument played by the ocean.

An elevator into the Baltic Sea.

A surrealist timepiece by the artist of melting clocks.

Outsider art meets hard scrabble mountain life in this woodcarver's home/art piece.

French Time Capsule-19th Century home revealed to the public.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

Kitschy horror displays now fill the house where some very real serial killing took place.

A bizarre house filled with an astounding array of collections.

Mining town from the late 1890s, once home to Calamity Jane.

Hollowed out cedar log tubs set in an ancient towering forest.