A ceramic postbox where visitors can post original poems and creative messages.

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

Some believe this abandoned Brutalist masterpiece inspired George Lucas's Sandcrawler.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

A futuristic, brutalist masterpiece that is also strangely prison-like.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

A 11-foot former president stands on a Kosovo street that also bears his name.

An unfinished Serbian Orthodox church with 1,389 golden crosses planned to represent the Battle of Kosovo.

What happens when you cross a mayor and a painter?

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A museum dedicated to secret surveillance.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

A scattered trail of street art adds a pop of color to the city's stark structures.

This museum offers a glimpse into early 20th-century Glasgow life.

Built as a training camp, this site became a detainment center for prisoners of war and German civilians during World War I.

Mumbai's angel.

These animal carvings stand as a representation of India and Britain.

World's most expensive home.

Towering at a height of over 30 meters, this turn-of-the-18th-century landmark is the tallest temple in Nepal.

The former stronghold of the Malla Dynasty has remained virtually unchanged since the 17th century.

This historic square in Nepal is home to temples dating back to the third century.

This small shrine dedicated to a fish is believed to hold the secrets to this historic market's founding.