This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

The Guinness Record holder as the "tallest cinema in the world" is a building with screens in almost every one of its 12 floors

Three columns of volcanic rock shoot out of the ocean.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

A collection of windows created by two of the foremost leaders in the British Arts and Crafts Movement.

A copy of an ancient Roman distance marker that indicates the beginning of the Antonine Wall.

A 15th-century whalebone is tucked away in an unassuming corner of this medieval church.

Twenty carved heads in Glasgow take a comical, modern twist to the medieval apotropaic, avenger of evil.

Several colorful mosaic panels depict the life and creative genius of the Master of Suspense.

An ingenious way to immortalize the inventor of universal time.

The castle that provided the setting for much of 'Monty Python and the Holy Grail' is now a pilgrimage site for fans.

This redwood is a historic landmark, a town’s namesake, and the dancing sideline symbol of Stanford University.

A spring purported to have healing properties lies just outside Scotland's capital.

One of Ireland's best-preserved chambered cairns can be found next to a wishing tree.

A statuesque figure of a feline stands sentry over a ostentatious spiral staircase

There's more to this drinking establishment than meets the eye.

An obscure walkway dedicated to a scientist who helped pave the way for the world to sit up and take notice of Manchester.

This unusual 15th-century house of worship once catered to those who sought its healing properties.

A museum dedicated to firefighting in a city that was crucial to the modern history of the profession.

A community museum celebrates Glasgow's mighty shipbuilding days.

This vessel is the final ocean-going paddle steamer in the world.

An archway adorned with vulnerable flora and fauna.