A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

The antique barns in Cameron are not painted with your grandfather's Mail Pouch Tobacco murals.

A folk art mecca famous among outsider art fans.

Race through the maze, get your name on the sign.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

A swing to dangle you off the very edge.

A dangling church built over a Colombian gorge.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

Cathedral carved out of salt, located a mile below the Earth's surface.

This picturesque mansion has gone from opulent ruin to nature museum.

This secluded Iceland farm holds the collected works of one rural sculptor's creations.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A detached cement mixer has been transformed to resemble a relic from some obscure NASA mission to Oklahoma.

A self built castle built by a salt worker in Brazil.

The third version of this tall sailing ship sits, rusted and burnt, in Lake Ontario.

These strikingly barren, rolling red hills were caused by bad farming practices.

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Willy Wonka would love this weird half-a-home.

Just outside of Nairobi lies a large estate surrounded by endangered Rothschild giraffes, who have been fed from the window by Mick Jagger and Walter Cronkite.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.