Discover the story of a man, a dog, and a plan to turn a decommissioned Atlas F Missile Base into an underground resort.

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

Over 100 lasers, including huge ones that look straight off a sci-fi set.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

A high point in Vancouver kitsch.

During the American Revolutionary War, iron excavated from this mine was used to make swords, cannons, and more.

Bits and pieces from the ill-fated Donner Party's winter cabins.

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

Only a few remaining items alert intrepid explorers that a town once stood in this region.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

Archaeologists believe this panel of petroglyphs depicting descending sheep and other figures in Glen Canyon are 3,000 to 6,000 years old.

Once one of the most polluted caves in America, now an environmental success story and a museum dedicated to caves.

Artifacts from a battleship sunk at Pearl Harbor displayed in the Capitol building of its namesake.

An approximately 500 million-year-old rock outcropping covered in fossilized bacteria.

This iconic Lancaster everyman has been reading the same story since 1980.

North America's largest accredited model railroad museum.

A monument to an Irish secret society thought to be responsible for a string of violent attacks in Pennsylvania coal mines.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

The first documented commercial gold find in the United States.

Every autumn, this grove of living fossils erupts in a blaze of brilliant golden-yellow leaves and stinky fruit.

The walls of the statehouse tell the story of Ohio’s prehistoric past.

Nuclear waste dump site now an environmental sanctuary.

A monolith replica monument of Jean Ribault commemorating the landing of the French in the New World.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.