This micro-nation may be some sort of prank, but its constitution sure seems official.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

The sun acts as a key that only fits this giant keyhole twice a year.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

A flower grows on this giant stone that is said be able to control minds.

This museum remembers the tough Mormon trek across America through an intriguing array of artifacts.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

This otherworldly palace-mausoleum complex is the stuff eternal dreams are made of.