Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

Farms are serving pizza made from their own fresh crops, a growing trend in the American Midwest.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

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

The first permanent memorial to a unique secret weapon of World War II.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

A cabinet of curious mathematical models and old calculators.

Once a year, at exactly 11:11 a.m., this monument comes to life.

The biggest solar telescope in the world helps reveal the secrets of our sun.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

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

In Tucson a giant metal snake helps pedestrians cross a busy highway.

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

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

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

A self-built castle made by a mysterious man.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

Where beautiful signs live on forever.

The largest earthwork effigy in the world.

The Magical World of George Phar Legler.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.