The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

This ancient jade mask depicting the Zapotec bat god was found in the ruins of the pyramids of Monte Alban.

The ruins of an ancient temple to the Aztec wind god discovered in the middle of a metro station.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

The only castle in North America to ever house European sovereigns.

Part bookstore, part café, and part forest.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

A controversial magical figure is hidden within a diorama of the city.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.

This slender three-story building has also had several famous residents.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

This Manhattan museum houses one of the largest collections of Spanish art and manuscripts outside of Spain.

The home of the first American-born saint is one of the only curved buildings in New York.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.