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

These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

A stonemason's hilarious revenge came in the form of this peculiarly positioned gargoyle.

These ramparts, once lined with towers, were constructed in defense of Beaune.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

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

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Commonly acknowledged as the only public monument to the Devil himself.

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

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

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

Home to the "Rat King" of Nantes and other wonders of the natural world.

This abandoned church in central Lyon is missing its front stairs.

Hundreds of hidden passageways weave through the old quarters of Lyon.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Explore the 500-year history of silk-making in Lyon at this museum, workshop, and boutique.