Once the home of a hermetic monk, this cave now houses a small church.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Used as an example in one of the first dictionary entries for "museum" in 1706.

Home to the most complete dodo remains known - one head, and one foot.

Eighty million natural history specimens call this gargantuan museum home.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Scattered throughout London are ancient remnants of the city's former bounding wall.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

The curios of pharmacist and collector Henry Wellcome.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

The once highest point in China blends symbolic design with a kick of adrenaline.

Ming Dynasty necropolis raided during the Cultural Revolution.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Giant topiary dog once played a role in a terrorist bomb plot.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This cramped crevasse saw the entire population of its island suffocated inside its depths.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The celebrated eyesore created by starry-eyed sweethearts.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

Astonishing rock formations dot the Brimham Moor landscape.

Achill's most recently abandoned village dates back to to the Age of Enlightenment.

Northern Ireland's Brobdingnagian stepping stones.

Huge winged monument in the United Kingdom.

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