This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

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

Alexander Hamilton’s creation caused quite a bit of controversy.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

A museum designed by and dedicated to P.T. Barnum in the town where he is buried.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

A little sculpture with a large wardrobe.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Hidden behind musical flora and forgotten for over a thousand years, this cave is now a neon dream.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Medicinal spa created with the discharge from a geothermal energy plant.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

The unusual burial monument of Arizona's first governor.

The medieval home is still engraved with the symbol of the profession, an eye flanked by two axes.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

A centuries-old forgotten underworld lies beneath Malta.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

Dynastic Home of the De Piro Family.

The first piece of public art dedicated to LGBT rights.