A hand-built folk art installation covered with messages of God's love.

This shop for all your super spy needs hides an educational secret.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

The fairy tale castle of the "fairy-tale king."

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The world's only museum devoted to the wonders of fluorescence.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A psychedelic labyrinth on the San Francisco bay.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Expansive and colorful studio of Minneapolis art-star, Doug Padilla.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

Behind a modern brick exterior lies the oldest continuously-operating lunch-car diner in the United States.

This quirky museum has a collection of more than 15,000 bobblehead dolls.

The titular fictional logger only inhabits this otherwise historically focussed museum via a piece of fiberglass kitsch.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

The remains of a enormous earthen figure of unknown origins cuts across a rural Wisconsin road.

The menacing creature had a tremendous influence on the local culture before being exposed as a hoax.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.