The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

The middle finger of modernity.

A lover's walk between hilltop towns, decorated with graffiti love notes.

Five candy-colored villages on the Italian Riviera.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

This historic spot was where America's involvement in the Vietnam War officially came to an end.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

This French colonial post office is arguably the grandest in all of Southeast Asia.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Vietnam's largest Buddha statue depicts a female sage.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

The bears of Bern have been a city highlight for over 500 years.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.