This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.

Ancient rock-hewn town that witnessed key events of Georgian history.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

Old Danish castle immortalized in Shakespeare's Hamlet.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

An out-of-place slice of France, smack in the middle of Shanghai.

The once highest point in China blends symbolic design with a kick of adrenaline.

Devoted Buddhists can earn enlightenment in the next life by crawling through this symbolic nostril.

A beautiful bamboo trail tucked in this famous Japanese shrine.

Nine Gardens in one—with tea service.

The 10,000 Torii shrine.

This 700-year-old street food market features baby octopus and soy donuts.

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

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Macabre astrological automaton clock dating to the late 1400s.

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

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

An ancient necropolis of magnificent tombs.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

Built as an anti-fascist tribute, this surreal Yugoslav memorial became an unwelcome symbol after the Croatian war for independence.