A 19th-century fortress and collection of artifacts offer a tour of Saudi history.

These towering cliffs jut dramatically from the middle of a barren desert.

An annual two-week festival near the city of Riyadh when Saudis let their hair down.

A phenomenon that appears to make gravity work in reverse has been attributed to jinn, supernatural spirits from Arabian folklore.

In the middle of a barren desert, a massive, solitary rocky thumb juts out.

It's believed human settlements from the Palaeolithic Age were established not far from this canyon.

An archaeological site believed to be the burial place of the "mother of us all."

This mesmerizing, colorful structure looks like a tent made from stained glass.

This tower has survived the times despite being composed of mud and camel hair.

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This collection of grinning ephemera has grown from basement to Brooklyn.

“Invented in Key West, Perfected in Brooklyn."

Detailed facade of a brownstone in Boerum Hill.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.