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

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Crusader ruin with views over South Lebanon.

This family tattoo parlor has been inking religious pilgrims in the Middle East for 700 years.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

The world's brightest bioluminescent bay.

The world's second largest single-dish radio telescope, once used to contact E.T.

The most sacred Jewish shrine in Iran and a fine example of restoration works gone wrong.

Leaking natural gas never stops burning on this hill, making it an infinite inferno.

Two Chinese dragons guard the caves of this medieval temple in Iran.

Marked by the hand of the explorer Henry Morton Stanley.

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.

Iranian tombstones shaped like male and female sexual organs.

This 12,000 year old Iranian cave village has been continuously inhabited for over 3,000 years.

Burial site of a Jewish prophet revered in Iran.

Salt cured mummies continue to turn up in this Iranian mine.

The fire inside this temple has burned for more than 1,500 years.

The hottest, driest, and most scenic desert on Earth.