The fountain marks the area where hundreds of accused witches were burned at the stake.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Saintly bones pressed into a wax effigy of a Catholic superstar.

This little-known relic crypt holds stolen parts of a Roman Empress.

A mechanized clock where a man fights off a dragon, crab, and rooster.

One of Jeff Koons’s largest sculptures and his first commemorative work.

A melancholy jester sits on the grave of a famous 20th-century ballet dancer and choreographer.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

The unexpectedly beloved remnants of a controversial thermal power plant.

This fountain was designed to honor the man who helped bring water to Barcelona.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Turntable anonymously received orphans, alms, and groceries.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

An early 20th-century bullring converted into a modern shopping center.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

This cemetery features modernist statues as strange as its name.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

This cafe offers a curated collection of treats and tipples made by monks and nuns.