A building so large that it has its own weather.

The highway's southernmost spot is a beloved local attraction.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

A more chill but no less fascinating version of the famous ancient archeological site.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

A refurbished locomotive from a bygone era in the middle of the Jordanian desert.

Concentrated around the Dead Sea, these surprising canyons are filled with coursing water, fish, and even crabs.

The oldest botanical garden in the world that technically isn't the oldest.

Turtles swim in a pond surrounding a classical temple in this lush park in Vicenza.

Where commuters walk through remnants of an ancient Greek necropolis.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

This legendary city has been a tourist attraction for centuries.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Monasteries on rock pillars, once accessible only by frayed ropes.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The ruined doorway is a portal to the building's turbulent and torturous past.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.