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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This king penguin is a knighted brigadier of the Norwegian Army.

The most loyal of little dogs, or a Victorian era publicity stunt?

The oldest and smallest cemetery in Paris is only open to the public twice a year.

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

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

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

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

If you ever wanted to touch a medieval mercenary’s three testicles, look no further.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Visit the site where the original Krispy Kreme doughnut was made back in 1937.

These tree-filled acres are also filled with history, hiking and a celebration of Appalachian crafts.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

This bridge is haunted by the ghost of a distraught mother.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

Belgium’s famous peeing statue has worn many hats (and coats, and pants), which are on display at this small museum.

Medical history with an amazing, if frighting, collection of wax diseases on display.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

Barça football fans might see the insignia hidden in a church window as a divine sign.

This oddly shaped church resembles a rocket.

This charming candle shop has been in business since 1789.