Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

This museum is rotten with a century of wax medical deformities.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

An enormous, inside-out glass globe built in 1935.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Wars fought and wars won are remembered by these abandoned bunker ruins.

A place as enchanting as the journey to reach it is harrowing.

This historic abandoned train station looks like a stop for ghost trains.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

A bathhouse from the second Islamic Caliphate decorated with frescoes of constellations, pleasure gardens, and naked ladies.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

A little Lady Liberty stands in the Norway town where the copper for the real thing came from.

The remnants of a failed socialist commune can still be found just off a California highway.

A magical place that lets you play in and explore the world of Studio Ghibli.

The world's largest model of our planetary system.

An astounding collection of medical specimens, including bits of President Lincoln.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

The famed architect designed this Minnesota gas station of the future with a lookout tower.