The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

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

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

A Roman-style column in Oregon hides a spiral staircase inside.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

Alexander Hamilton’s creation caused quite a bit of controversy.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

This moving cemetery sphere is a slowly rolling stone.

An office built to look like a giant basket.

The park is home to the United States's only still-operating Dutch windmill.

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

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

Everyone's invited to put on a miniature concert with this world-class musical wonder.

These gardens recreate unique and endangered Michigan habitats.

Astounding collection of coin-operated games and automata.

This 19th-century former train station’s unusual roof shape earned it a rather witchy name.

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