You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

Only ruined buildings and abandoned charcoal kilns remain of this once bustling Wild West boom town.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

Take a hike to this remote, scenic tea stop in the Canadian Rockies.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

Spectacular views await visitors to this lake.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

This Native American settlement dates back to the Pueblo II period.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

One of Mexico's youngest major cities still holds on to this structure representing its short modern history.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

Marine fossils from the Devonian period are exposed at this park.

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

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

The southernmost outpost of the Russian Empire in colonial America.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.