This famous city eluded concrete detection until the early 2000's.

The legendary wooden horse that stands in modern Troy is a prop from the 2004 Wolfgang Petersen film.

A charming beach town in Turkey captures all the colors of the rainbow.

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

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

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Resting place and mausoleum of the founder and first president of Turkey.

A little sculpture with a large wardrobe.

Inspired by Thomas Stothard's painting of the "Journey to Canterbury," albeit with Canterbury natives.

This skewed English house has looked like it's going to fall over for centuries.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An ancient Egyptian temple in the middle of Madrid, Spain.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

This sculpture pays homage to the street sweepers of Madrid since its inauguration in 2001 in Plaza Jacinto Benavente.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

This grand gate once marked the entrance to a military barracks.

The stunning interior of this Gothic church is covered in ornate gold details.