The second largest surviving chained library is housed in this 12th century church.

One of the last doorless, continuously moving elevators still in use in the U.K.

A beautiful and classically designed villa, with an hourly infestation of monsters.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

Famously misunderstood wonder of the ancient world

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Medicinal spa created with the discharge from a geothermal energy plant.

Three columns of volcanic rock shoot out of the ocean.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This stunning concert hall has become a symbol of Iceland's national recovery.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

The highest peak in all of England is plagued by dangerously fickle climate shifts.

Huge winged monument in the United Kingdom.

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

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

A perfectly running 230-year-old silver automaton and music box.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

Fascinating town where normal life interfaces with the occult.

England's most notorious suicide spot.