This immense scene of a cosmic battle between a jaguar and serpent illustrates the Aztec concept of the duality of life.

These subterranean models show Mexico City's central square during three different eras.

Mexico City's residents are being watched by this state surveillance headquarters, designed by architects with a flair for intimidation.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

The decaying adobe remains of an old homestead are just off the beaten path in Joshua Tree National Park.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This historic mansion was built as a symbol of love between a husband and wife.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

The only museum outside of Australia dedicated to exhibiting the artwork of Indigenous Australian artists.

These aggressively sustainable art homes look like something out of 1970's science fiction.

The building stands within a quiet, postcard-perfect New Mexico village.

This popular pilgrimage site offers a hole filled with holy healing dirt.