This golf ball–shaped former desert real estate office now houses a UFO museum.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

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

The fading, forgotten remains of a once bright and booming factory.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.