The largest and best-preserved rotunda in Prague.

A series of playful yellow penguins share a serious message about the environment.

Tucked away in a Prague park, a statue beloved by romantics honors a poet so nice they buried him twice.

Local folklore claims that this wall was not built for defense, but to provide labor during a time of famine.

A half-buried vehicle in Prague's is the latest iteration in a long-running piece by Czech artist David Černý.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

The oldest housing complex in Riga is a mini timeline of architectural trends.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

The reconstruction of this prominent building fulfilled a long-written command.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

An engineering marvel at the time of its construction, this cross-border waterway sought to connect the Black Sea to the Baltic.

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

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

An ancient burial ground believed to have been used for ritual sacrifice.

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

This grand hydraulic installation has provided water for townspeople since the Middle Ages.

Founded in 670, this ancient mosque is an architectural time portal.

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

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

The best-preserved Roman small town in North Africa.

This unassuming oasis elevated just above the busy streets of Jerusalem offers one of the best views of the Old City.

A "miracle" that seems to produce more holy fistfights than holy revelations.

The majority of the highest mountain in Poland is actually located in a different country.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.