This Italian foot path winds through the mountains via 52 individual tunnels.

The preserved left hand of a saint once known as "the Pearl of York."

A 12-foot-tall metal fisherman looks out over the promenade.

This plaque commemorates an amazing 19th-century sea rescue.

This coin collecting cod is over 130 years old, and the United Kingdom's smallest listed structure.

This collection of ancient structures makes up part of the largest group of prehistoric earthworks in Britain.

Cycle the solar system—from the sun to Pluto—right here on earth.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

Large collection from the 3rd millennium BCE.

A sharp sculpture made of thousands of pieces of jagged glass.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

The burial place of one the greatest Arthurian authors, with the sword in the (grave)stone.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

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

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

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

A Byzantine-era church hidden in a wooded area below the Acropolis.

These caves secretly held national treasures during World War II.

According to legend, this ancient column contains healing properties.

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

This legendary city has been a tourist attraction for centuries.