This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

The ruins of a paper mill destroyed during the Civil War still tower over a tributary of the Chattahoochee River.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

Strange memorabilia held inside an unassuming library.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

Puerto Rico's oldest rum producer started its 140-year-old business with "a little barrel."

A popular oddity on display in a stately building, offering a symbolic commentary.

No passport is required to eat around the world at this elegant restaurant.

A man's home is his castle.

One of the world's largest automobile junkyards is a unique landscape of metal and moss.

An elegant Georgian cemetery best known for the grave of the little girl whose murder on Christmas Day remains unsolved.

The hallucinogenic center of the ancient world.

Where commuters walk through remnants of an ancient Greek necropolis.

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

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

A small wall and marker are all that remain of this historic canal tunnel.

This tower-tomb honors a president who only held office for a little over a month but dedicated his life to his country.

Eat your Big Mac in a DC-3.

These two delightful animal-shaped buildings host a visitor center and wool shop.

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

Modern art meets modern convenience in possibly the world's most architecturally important public bathroom.

A 1542-foot-long suspension bridge offers scenic mountain views.