Macabre astrological automaton clock dating to the late 1400s.

This lake-bound geographical marker sits at the point where three European countries intersect.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

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

The stunning interior of this Gothic church is covered in ornate gold details.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

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

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

A 141-foot wave of crashing lumber guards the entrance to the Grand Place in Mons.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

Climb inside an iron crystal magnified 165 billion times its normal size.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

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

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

This splendid tomb may look fantastic, but there's nothing in it...

This strange statue features a bust of the famous composer plopped atop a woman's body.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

The amazing wonder cabinets of a very rich Austrian archbishop.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The Habsburgs' royal collections of art and wonders.

Baroque celebration of the end of the Great Plague of Vienna.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.