Former wax museum from the 1960s, home to many wax U.S. Presidents and the famous White House miniature.

Giant topiary dog once played a role in a terrorist bomb plot.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an eighth-century Buddhist master.

The world's second largest salt mine, said to have been discovered by Alexander the Great's horse.

The abandoned village of Skarð aptly illustrates the idiom "Don't put all your eggs in one basket."

Cold storage for agricultural biodiversity.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

A micronation of epic proportions.

The deepest hole drilled in the name of science, where evidence of Precambrian life was found.

Spiral alpine structure provides an alternative experience of viewing the Matterhorn.

Stalin's secret bunker.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

Bermuda triangle lighthouse, site of mysterious disappearances, left to crumble into the Atlantic.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

This small primate research island is teeming with playing, fighting wild monkeys.

The Nazis lost more men trying to take this Russian-held Stalingrad apartment block than they did when taking Paris.

A beautiful geyser under environmental threat.

Angels, demons, and tortured souls on a giant wall mural in a little church.

The lavish temple of the Cao Dai religion that includes Buddha, Mohammed, Joan of Arc, and Victor Hugo.

Cities of the world and famous Thai monuments in minature.

Death road of Bolivia.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

Medieval Danse Macabre Fresco in Northern Brittany.