Frida Kahlo's childhood home, now a museum of her life and works.

A museum glorifying the life of Stalin, located in the city of his birth.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

The decaying remains of a once-luxurious Soviet spa town.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

A public work of art that also provides some relief from the summer heat.

A whimsical bridge adorned with decorative dragons.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Every winter, this former planetarium is transformed into a massive, brightly-lit Christmas ornament.

Go surfing on this urban wave, "hacked" by local surfers.

A fearsome dragon clings to a corner of Munich's city hall.

The footprint of a frustrated devil in Munich's Cathedral.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Mummies preserved naturally for seven centuries.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Oriental bazaar in the heart of Sarajevo.

The place where World War I began.