The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

Stockholm's tiniest statue is of a small boy looking at the Moon.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

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

This modest marker near Notre Dame identifies the very center of Paris.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

One of downtown Berlin's last reminders of its Communist past.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

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

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

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

Singapore's oldest Hindu temple.

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.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

Sacred Indian temple that’s all monkey business.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

This stunning 15th-century royal hill fort preserves the age of chivalry in Rajasthan.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

This gem-encrusted temple is said to contain some of the Buddha's hair which can make the deaf hear and the blind see.

Over 2,000 ancient temples dot the Myanmar landscape at the site of this famed archaeological site.