This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

This 700-year-old Cyprus castle is the birthplace of the world's oldest wine, said to be toasted by Richard the Lionheart at his wedding.

Villas that once served as playgrounds for the rich now fall away in decay.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

An 11th-century fortress home to one of the most influential royal houses in medieval Europe.

Walk through a restaurant's refrigerator door to reach this hidden bar.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.

A historic observatory precariously perched at the "Top of Europe."

A little-known sculpture park of contemporary environmental art in a Lapland forest.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

This unique preservation is one of the only taxidermies in the world made with real whale skin.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

A floating cat sanctuary on an Amsterdam canal.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A curious collection dedicated to human and animal anatomy and pathology.

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

Collection of nearly 500 concrete figures sculpted by the late Veijo Rönkkönen.

No matter how many times this community-run sauna gets destroyed, it always rises from the ashes.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

Home to three historic ships from the age of Vikings.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

This honeycomb-textured tafone looks like a petrified troll head.