Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

God's Saharan sandbox of wrath.

A fortified city, home to a remaining population of five families

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Bits of flat terrain surrounded by cliffs make one of the most beautiful landscapes in the Azores.

One of few vertical lava tubes in the world accessible by foot.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This medieval castle was home to a known tyrant and features several hidden passages.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

For hundreds of years, this huge figure has been blessing visitors before they explore his body.

Danish observation tower designed to look like a giant beer bottle.

The final resting place of one of the brightest physicists of the 20th century.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

An unconventional and naturalistic sculpture depicting the artist marking his territory on an exterior faculty wall.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

One of Scandinavia's largest mosaics pays tribute to Danish art and science luminaries.

This sublime architectural marvel is a rare example of an expressionist church.

Six beautiful wooden giants are hidden around Copenhagen.