Largest tulip festival in America, includes fireworks, a parade, and a carnival.

The remains of a religious colony, its amusement park, zoo, and baseball empire.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

The former home is said to be haunted by the ghosts of the beloved mayor and his wife who lived here.

A lush green oasis in the middle of Chicago.

The first motion picture theater in southern Utah, reimagined and renovated as an arts hub.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

There’s a hidden military meme engraved on the World War II Memorial.

The seat of the lost Ryukyu Kingdom has survived numerous fires and wars over the centuries.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

A hulking remnant of Alaska's industrial gold mining boom in the 1920s.

Considered by many to be one of the most dangerous highways in Alaska.

The sculpture's largest spire points directly toward the North Star.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

A trading post in the North Pole where children send letters.

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

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.