This former coal gasification plant found a curious second life as a popular public park.

Apartment complexes built into huge repurposed natural gas tanks.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

US-50 in Nevada is known as "the Loneliest Road in America," but this earlier iteration of the route is even lonelier.

It's not a typo, now say it five times fast!

Now a city park, this site started as a stage stop, then was a working ranch, and finally became a dude ranch that specialized in letting wannabe divorcees establish Nevada residency.

A historic dam made famous for its turbines and feature in a Hollywood classic.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

Terraced flowerbeds and rock sculptures in the midst of the Minnesota wilderness.

The king of U.S. high points towers over every other peak on the continent.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

An abandoned mine where dreams of quicksilver trickled away over 75 years ago.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

One man handcrafts "the best sake made outside of Japan" in a tiny desert town on Route 66.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

Mexico City's largest market contains a Willy Wonka-esque wonderland.

Time travel with sweets across history at this research-based candy store.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

Astonishing rock formations dot the Brimham Moor landscape.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

A dramatic sculpture high up in Yorkshire with vistas on an industrial scale.