This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

This WWII aircraft museum presents its wrecks like taxidermy, complete with recreations of the crash sites.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

A memorial to the soldiers who died in the bloody battles to control Verdun in World War I.

This memorial pays homage to Pueblo's four Medal of Honor recipients.

The island home of an unlucky whaling captain whose story inspired a great American novel.

This icon of the Atomic Age now lays dormant.

The last remaining predreadnought battleship in the world has been a museum for nearly a century.

Built by the patriotic residents of Boonsboro in a single day.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

The rare American Civil War-era weapon was never fired in anger.

The last intact steam engine factory in the United States.

The largest collection of historic military firearms in the United States.

The only remaining Cold War–era Minuteman II missile control center in Missouri.

This tiny patch of arid sand sits in one of the greenest states in the United States.

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

The beloved war-time celebrity spent time in the area before retiring to the Edinburgh Zoo.

A surprisingly beautiful abandoned World War II military base in East Greenland.

The train that took the prime minister on his final journey now rests in a British museum.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

There is beauty and history in the ruins of this former company town.

A museum dedicated to restoring vintage aircraft, located at a working airport.