Stockholm's deepest subway station is also a stunning ecological wonder.

On holy holidays, Israel's second president used this room atop Mount Zion as a refuge to read the Torah.

This street has over a half-dozen names, all at once.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

These tenacious 14th-century towers defied demolition and are now a fairytale vacation rental.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

Originally planted by the ancient Carthaginians, this sprawling palm grove is one of the largest in the world.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

A remarkable medieval structure born from a 14th-century disaster.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

Thousands of flowers create enchanting pink tunnels over the city streets.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

A silly medieval mural preserved on the side of a Viennese house.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

A kaleidoscopic warehouse-maze of handmade neon signs.

Be(w)ar(e) the moat around this historic Czech castle.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A World War II officers' club features Old West murals painted by German POWs.