This sinister Baroque entryway could lead you to a terrible fate.

Along the pavement of this neighborhood in Madrid are quotes from famous authors.

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

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

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

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

A haven for book enthusiasts across the street from Retiro Park.

This little sun pays homage to a massive gate that once stood at this location.

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

The Spanish king's private bathroom embraced the idea of a porcelain throne.

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

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

A must for film lovers in Madrid and home to the Spanish Film Library's projection space.

At this century-old barbershop, clients used to be entertained with a glass of brandy and a cigar.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Breathtaking and huge 430 year old maps of Italy.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Haunting monument to the German Jewish philosopher who died while fleeing fascism.

Lyon's "Wall of the Silk Weavers" is one of the largest murals in Europe.

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

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