A model village fit for an emperor.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

The Guardian of Tallinn.

A former imperial sea-fortress and Soviet prison.

Underwater roads undetectable from the surface used for escape routes from foreign invaders.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

An ancient artistic garden parlor full of hidden water wonders.

A lover's walk between hilltop towns, decorated with graffiti love notes.

The bomb-ravaged remains of of a colossal Neptune.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

The bears of Bern have been a city highlight for over 500 years.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

This man-made mound monument was built out of soil from all across the Polish empire.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

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

Bohemian paradise covered in majestic forests.

Two stunning 17th-century libraries and a cabinet of curiosities.

The world's oldest known salt mine.

A whimsical bridge adorned with decorative dragons.

Oriental bazaar in the heart of Sarajevo.

The place where World War I began.