Fossils, railroads, and waterfalls!

Half of a waterfall goes into the river while the other half seems to disappear.

The rocks in this arid basin leave trails of movement behind them.

Try not to get slimed in Tribeca.

A massive sea stack famous for its appearance in The Goonies.

This former mining railroad is one of the best-preserved short lines in North America.

The train collection of an eccentric New England seafood mogul is now a National Historical Site.

At the birthplace of American railroading, a world-class collection of historic trains.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

A tribute to the riders who bridged East and West.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

Sniff the Titan Arum's rotting flesh.

The former home of the five-time Socialist Party nominee is now a museum dedicated to his career.

The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

Odd outsider art installations surround a Gold Rush-era ghost town.

The record holder for the world’s largest peach.

The first permanent memorial to a unique secret weapon of World War II.

A monument to the Mohawk people stands along an old Native American trade route.

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

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

The only road through the heart of Glacier National Park.

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

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.