A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

A statue of a boy looks up at where the famous rival to the Leaning Tower of Pisa once stood.

The unexpectedly beloved remnants of a controversial thermal power plant.

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.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

Notorious artist squat renovated into legal studios.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

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

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

18th century underground pilgrimage site, dedicated to a Saint that did something...

Op-art architecture designed for happiness.

An exquisite Baroque church in Vienna's old town.

Baroque celebration of the end of the Great Plague of Vienna.

The Habsburgs' royal collections of art and wonders.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.