Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This is one really big nut.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A Prada store in the West Texas desert that is never open for business.

Ghost town with a beer-drinking goat for mayor.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

Once called the Jersey Lilly, this former saloon was the domain of infamous Judge Roy Bean.

A 17-foot-tall cutout of the Texas-born actor stands alongside the highway.

A swamp and garden tour featuring local wildlife and exotic botanical specimens from around the world.

For 150 years one family has been producing the iconic hot sauce on a bayou island made of salt.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

The secret city built by the Manhattan Project.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The world's largest collection of historic U.S. military naval vessels.

This 19th-century building inadvertently preserved the handprints of its builders within its walls.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

An elaborate, hidden model train in the Needham Town Forest.

Order the extra snappy, steamed hot dogs at this fourth-generation-run New England diner.

This pavement line and accompanying statue commemorates the starting point for the world's oldest annual marathon.

One of the smallest churches in the United States is located along the side of the road in a residential neighborhood.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

The largest living museum in the Northeast recreates life from the Early Republic period complete with costumed historians and reenactors.