The tower in this 1,000-year-old mud-brick village seems to vibrate for no apparent reason.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

A dreamy mausoleum honors Persia's most famous poet.

17th century mosque for Shah Abbas' harem.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

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

A mocking tribute to the past and modern leadership of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

A church of bones, decorated with 40,000 human skeletons.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Historic medieval fortified city in southwest France.

Super Robot anime statue guards a forgotten suburban development in Tarragona.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

Mountain where Jesus was first tempted by the Devil.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

The 10,000 Torii shrine.

Climb to the top of the world's largest seated bronze Buddha.