The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

An ancient octagonal weather station named for the eight Greek gods of wind.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This man-made mound monument was built out of soil from all across the Polish empire.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Twisted buildings adorn the banks of the Rhine river.

The "Prussian Versailles" that is as glorious today as when it was built.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The most visited, and possibly most controversial, museum in Germany.

The fairy tale castle of the "fairy-tale king."

The Liverpool street made famous by the Beatles is real.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This cluttered cantina is famed for its cheese-spiked, raisin-flavored liqueur.

The first public library in the Americas has more than 45,000 books dating back to the 15th century.

This beautiful and unmissable little museum is full of fascinating artifacts from Mesoamerica's great civilizations.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

This palatial building has lived many lives as a convent, prison, cultural center, state archives, and government offices.

This house covered in art created with volcanic rocks is shrouded in macabre lore.

The "world's smallest volcano" has been used to store meals and dispose of dead bodies.

An indigenous take on European design creates a stunning visual overload.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.