Pompeii's less famous neighbor is still revealing her secrets.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

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

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Op-art architecture designed for happiness.

Baroque celebration of the end of the Great Plague of Vienna.

The topiary maze at the Habsburg hunting lodge.

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

A layered tribute to the work of mosaicist Isaiah Zagar.

World's first "penitentiary," meant to be humane, drove men insane.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This unusual structure may be on its way to becoming a cultural landmark in Toronto.

This massive, ancient stone was disassembled and then put back together again.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The ancient latrines of the Greeks, in all their public glory.

Roman ruins top white travertine terraces formed by ancient hot springs.