This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

The best Tiki bar in Las Vegas.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

This landmark jazz venue is the oldest continuously running African-American club in the United States.

A vintage penny arcade hidden in the back of a fun fair-themed bar.

The natural history museum displaying the British bird collections and dioramas of Edward Booth, free of charge.

Decrepit Victorian public lift is a white-knuckle ride.

Regency-era excess on the English Coast.

Step into a pastel time capsule where candy is truly dandy.

Huge masonic hall in Philadelphia with lavishly themed rooms.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

400-year-old garden, restored to beauty.

Walk into an underground archeological dig, the site of the Roman Forum that was once the center of Valencia.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

This picturesque archeological site looks like it was pulled straight from a fantasy novel.

Across the islands, baked goods, sauces, and much more are for sale 24/7.