The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

Tour a Cold War-era U.S. military missile launch site in Anchorage.

This old ruin once served as a post office, a train station, a restaurant, and a bridge to the Atomic Age.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

Calidum et Deliciose Succosum!

A total of 14 men held the title of "president" before George Washington—their historical legacies are enshrined in the lobby of a hotel.

An acoustic anomaly with a mysterious cause.

An Industrial Revolution-era public work that purified water using nothing but sand.

An enormous, inside-out glass globe built in 1935.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

The final resting place of the world's first nuclear reactor.

World's smallest skyscraper, the product of a remarkable con.

The meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

Operational for less than a year, this mill produced more than 11,000 tons of chrome concentrate in its short lifespan.

Is this 47.7-mile stretch of highway the longest straight road in the United States?

A unique, free-floating electric ferry may be the only of its kind in Europe.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

This is the last hand-cranked chain ferry of its kind in operation in the United States.

Inside the simple black-and-white exterior of Église Sainte-Cécile hides a pastel wonderland.

The brainchild of Eleanor Roosevelt, her "Little Village" was a collectivist dream.

This former zinc operation has a 90-year toxic history.