An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

A forgotten "city of water" underneath the famous Trevi district.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

The middle finger of modernity.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

This restaurant's specialty is "a major enigma for food historians."

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

In addition to escorting prospective couples to and from ballrooms, this lane was also a place for gentlemen to settle scores.

Eighteenth-century home, where Herschel discovered the planet Uranus.

With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

Legendary prop shop filled with one man's collection of scientific curiosities.

A massive volcanic plug is now a protected area that hosts a number of bird species.

An old whaling station now serves to give the public a look at the commercial whaling industry, no longer a part of Monterey's economy.

A tree grown from astronaut seeds which were exposed to cosmic rays.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

An ancient impact crater on the outskirts of Pretoria.

Hidden in the hills is a mysterious stone structure, known only to a few.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.