What looks like a normal building is really a hollow facade hiding a subway vent.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This demon atop the Notre-Dame de Paris looks utterly bored.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

The site where two doves fell in love.

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

The final resting place of the "father of special effects."

How did a French journalist’s grave become the sexiest statue in the cemetery?

This mosque is an enduring symbol of Central African Republic's rich Muslim heritage.

Amidst political unrest, this Roman Catholic Cathedral has helped organize peace talks.

Cambridge’s century-old outdoor swimming pool is tied for being the longest pool in the United Kingdom, but it is also unusually narrow.

Art under your feet honors the history of a working-class London neighborhood.

This hike brings visitors closer to Taipei 101, once the world’s tallest building, than any other trail.

A tribute to an 18th-century British surveyor.

A former groundskeeper’s cottage, now famous for being the main location of a hit British comedy game show.

The history of West London’s water supply.

Once a 19th-century refuge for immigrants, this pub has hosted performances by Amy Winehouse and the Arctic Monkeys.

Cemetery dating back to 1884, known for being the final resting place of the notorious Kray twins.

Walk into an underground archeological dig, the site of the Roman Forum that was once the center of Valencia.

From grand battles to daily life, this Spanish museum offers a view of world history in miniature.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

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