An artificial crater field that trained astronauts for lunar exploration.

This Pringle-shaped ledge makes for the perfect photo op.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

The unbelievably opulent home built for an infamous newspaperman.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Its buzzing collection honors vibrator history.

The ghostly remains of an accidental sea.

A hand-built folk art installation covered with messages of God's love.

The rocks in this arid basin leave trails of movement behind them.

A trash dump made beautiful by nature's power.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

This Old West prison built into the side of a cliff was said to be inescapable.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

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

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

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.