A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

An ancient Egyptian temple in the middle of Madrid, Spain.

The stoic structure boasts a whimsical set of stained glass art commemorating Lewis Carroll.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

This South London cemetery holds the remains of more than 15,000 people.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

A moving memorial to the fallen and missing from WWI trenches.

This memorial museum chronicles the apocalyptic destruction of the First World War.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

An island graveyard with spectacular views of the Caribbean.

In the depths of Glasgow Cathedral's crypt, one pillar stands out from all others.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

The colorful stairs are made with marble from the world's major quarries.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

Sweden's oldest animated sign is still lighting up the skyline today.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

The world's largest model of our planetary system.