The geoglyph once sported a glass bottle eye.

This section of the Kennet and Avon Canal has been designated the same level of heritage protection as Stonehenge.

The accidental discovery of this gilt bronze head led archaeologists to find the Roman Baths in the city of Bath

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

This monument is dedicated to Balto, the heroic Alaskan sled dog.

An eerie natural formation that looks right back at you.

This sprawling, Brutalist estate feels like a city within a city.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.

A grand Wetherspoon pub set in a former opera house dating back to 1902.

Eat fish and chips in a striking Neoclassical building that once hid a public lavatory.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

This restaurant was removed from the famed sister ship of the Titanic and placed within a hotel.

This giant wooden treehouse within a sprawling garden has its own eatery.

The sign at the garden gate reads: “These Plants Can Kill.”

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

This tidal island, a sacred site in early English Christianity, was the target of a notable Viking invasion.

These upturned herring boats make nifty storage sheds for fishing goods.

The unique design of these skyscrapers in a Paris suburb led to them being nicknamed "cloud towers."

Anatomical cabinet holds unexpected treasures.

This amazing trail among the many waterfalls around Ingleton has been enchanting visitors since 1885.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Tucked between a side street and a theater, this arch once led to a prestigious riding school, and now opens to a courtyard and community garden.

Locals pay their respects at a shrine to soccer player Diego Maradona—which claims to contain a real lock of his hair.