This abandoned amusement park was built on a site with a dark history.

One of the few surviving Panama Canal steam shovels stands outside a tiny Colorado mining museum.

This Chinese-style quartz sundial was saved in its final hour.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

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

An Arizona museum with a collection of pharmaceutical oddities, including a jar of a gangster's chewed gum.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Enormous lake at the bottom of a unique cave system.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

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

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

Thousands of mounted insects, and some live ones, hide within an otherwise ordinary shopping mall.

A fascinating collection of art made from petrified wood and fossils by two octogenarian twin brothers.