The monastery survived the Communist revolution in Mongolia as a religious museum.

Have tea in a cemetery with a dazzling view of Istanbul.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

One of the best-preserved medieval streets in Europe.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

An aptly-named street near the birthplace of the modern LGBT rights movement.

Different sections of the Zemun Fortress were built in the 14th and 15th century as a response to the advance of the Ottoman Empire.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

More than 10,000 small mirrors cover the curved surface of the world's second-largest solar oven, located in a remote village in Uzbekistan.

The Paul Bunyan of the steel industry.

A completely underground tour following the path of the most precious element: water.

A museum dedicated to secret surveillance.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

This theater opened in 1998, but both the building and the puppeteers who perform there have a distinguished history.

An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

A plain wooden seat that once belonged to one of the most prominent figures of the Protestant Reformation.

A fortified palace in the shape of a ship on the Thiou river.

One of the most historical literary characters continues to stroll his hometown.

This elevator was built in 1907 to connect two neighborhoods separated by a steep, rocky cliff.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

A touching tribute to the "Queen of Soul."

This famous writer's tombstone is a literary pilgrimage site that was publicly defiled by a rival.

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

Natural history museum displaying a famous taxidermied St. Bernard.