This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

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

This San Diego museum, housed in a former Navy training facility, is dedicated to preserving women’s historic achievements.

A 19th-century Baja cantina that many say is the birthplace of the margarita.

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

A mysterious spirit totem at the edge of Navajo lands.

A stealthy Apache hideaway that became the haunting site of a mass grave.

A self-built castle made by a mysterious man.

Huge otherworldly domed rocks on the shore of a deadly lake.

The ghostly remains of an accidental sea.

A museum dedicated to a sea that should have never been.

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.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

An eatery for UFO seekers on the Extraterrestrial Highway.

There's nothing creepier than a cemetery next to a clown motel.

Only intact Ichthyosaur skeleton in the United States.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

A rough granite monument marks the spot where Europeans first caught sight of the San Francisco Bay.

A mysterious painting of the self-declared Emperor of the United States watches over a local hof-brau.

These WWII-era murals were initially booed as a libelous portrayal of the American dream but have survived multiple attempts to have them destroyed.

A historic hotel in an old California railroad town with a rowdy reputation.

International delicatessen has been owned and operated by the same family for more than 110 years.