Built in just a little over a week this preserved bunker was created to protect our most attractive POTUS while he was on vacation.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

A new kind of theme park for adults off the Las Vegas Strip.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

This former lieutenant governor's home is brimming with curiosities.

One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

See the computer’s history revealed over the course of 20,000 years.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

Home to Hollywood history and a very special salt crystal.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

A memorial to the unknown and unheralded men and women of the Cold War military and intelligence services.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

The first KFC is on the National Register of Historic Places.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

The highest waterfall between the Rockies and the Appalachian Mountains.

A mysterious echo seems to defy the laws of acoustics.

The highest peak in the state of Vermont has some interesting features.

A 19th-century cabin built into a hollowed-out Sequoia tree.

This small shack near the entrance to Sequoia National Park has been in almost continuous operation for the last century.

One of the two USPS mailboats left in service docks regularly at Weirs Beach, Bear Island, and other Lake Winnipesaukee islands to deliver their mail.