Albert Einstein would often sit in this chair during visits to the observatory to discuss science with Willem de Sitter.

From morgue to urn, watch the whole process at this unusual educational attraction.

Peanut butter trees and miracle berries are just the beginning.

This family tattoo parlor has been inking religious pilgrims in the Middle East for 700 years.

A monument to the conquistador became increasingly controversial in the very city that he founded.

This giant statue is the product of a mixture of corruption, Stalinist architecture, and North Korean manpower.

A rare cluster of alien-like plants grows along a dusty highway.

Legend says this remote, “bottomless” lake was created by a curse.

This underwater cave in Madagascar is home to what is thought to be the country's largest fossil graveyard.

One of the best-preserved impact craters on the planet is located in the middle of the Sahara Desert.

This medieval wine press is one of the oldest in Cyprus.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

Walk 2,300 feet above the ground on the "Troll's Tongue."

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

This giant subway sculpture celebrates the fruit that inspired the theory of gravity.

This chimerical bridge/tunnel appears to dead end right into the sea.