One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A hidden three-foot-wide house separates these two regal churches.

Dedicated to one of the author's most iconic works.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

This 19th-century fountain's namesake animal isn't what you think it is.

Giant topiary dog once played a role in a terrorist bomb plot.

The world's largest reflecting pool is just two centimeters deep.

An underground passage originally constructed as an air-raid shelter during the Spanish Civil War.

Cliffside houses provide a spectacular view from their perch above the valley.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Vibrant street art created with mixed media.

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

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

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

A curious fountain that resembles a beloved character from the 1960s.

A fine mixture of the old and the new topped with an art deco neon spire.

Lucha Libre (Mexican Wrestling) themed taco shop.

A Masterpiece with a Tragic History.

This 19th-century church is now a popular roller rink.

These subterranean storage areas hold emergency water reserves.

Wisconsin's most celebrated export gets the royal treatment on I-94.

The birthplace of professional hockey on the shores of Portage Lake.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

This private residence was the template for one of the most beloved television homes of all time.