A hidden courtyard houses early 20th-century plaster masterpieces.

This geothermal hot spring hides beneath a slowly growing mineral dome.

George Martin's Caribbean recording studio now rots within the shadow of an active volcano.

A crumbling mountain resort that looks like it was abandoned in an instant.

A Beaux-Arts triumph set to become Ford's innovation campus

A crumbling hospital from the 1850s on Roosevelt Island.

Most famous work of one of Frank Lloyd Wright's sons.

When in Idaho, sleep in a giant potato.

The tiniest tiki room in San Diego.

In California, colorful roadside signs remind us all that love transcends borders.

With its peeling paint and faded sign, this theater-turned-recycling plant is a nostalgic relic of 1950s Americana.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

This desert oddity hides in plain sight thanks to a cartographic error and a desert explorer with a punny sense of humor.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

Quite simply the largest tree in the world (by volume).

Four hundred granite steps were built into this massive rock by the National Park Service.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

Mediums from a psychic utopian community lead a trippy VR journey on a parked desert bus.

The overgrown ruins of a once thriving World War I-era copper mine.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

A submerged archeological park still holds the wonders of a Roman Sodom.

Celebrating the transformation of trash into objects of beauty.

This naturally-sourced hot spring is now home to a clothing-optional resort.

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