Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

Resonating tubes make music from highway overpass.

Steepest flood safety railway in the entire world.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

A collection of full-size movie monsters opened to the public.

No one really knows how these old hobby horses got here, but the herd keeps growing.

A giant open-air sculpture made of over 200 full-sized boats.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

The best Tiki bar in Las Vegas.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A unique columnar residence built in the 19th century.

"Mock all and sundry things, but leave the saints alone."

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

A beautiful Victorian-era cemetery, complete with a miniature village.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

In a town that's had a whole lot of giant chairs this one still stands tall, just not the tallest.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

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