A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

The oldest continuously operating fish market in the United States.

This monument is dedicated to those lost on June 6, 1944, in the town with that day’s highest per-capita casualty rate.

A glimpse into the sacrifices of military members during World War II.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

A wall of chewing gum moonlights as collective art.

This beloved roadside attraction welcomes visitors with his signature neon smile.

An iconic 1960s theater with a Buckminster Fuller-style geodesic dome.

The arch that celebrated the completion of the Lincoln and Victory highways.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

The remnants of a creative early method of wildfire prevention.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

A Wild West jailhouse that slid down the mountainside.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Ancient pueblos built into the base of a natural canyon wall.

A spiritual vortex among the red rocks in Sedona.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Home of a 28-foot tall stalagmite known as the War Club.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.