Medicinal spa created with the discharge from a geothermal energy plant.

A surprisingly beautiful abandoned World War II military base in East Greenland.

Small Island off the coast of Greenland.

Thousands of letters to Santa get delivered to this mailbox in Greenland.

No longer the only, but definitely the oldest, fountain in Greenland.

An experimental forest at the foreground of arboreal science is also the canary in the coal mine for climate change.

The 3.8 billion-year-old rock proves that tectonic plates may have been shifting longer than we thought.

Mexico City decorates its facades with extravagant floral arrangements every year.

Explore the history of Mexico's lesser-known ancient alcoholic beverage.

A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

A gigantic, symbolic artwork covers the side of the building.

A "time traveler's" vision of human history stretches throughout Mexico City's Copilco metro station.

Get a close look at the gigantic remains of long-extinct mammoths.

This museum houses two of Mexico's most impressive Aztec monoliths.

This stunning and ethereal mural symbolizes the beauty, unity, and diversity of humankind.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

The now-public home of a renowned art collector is full of unique pieces from viceregal and 19th-century Mexico.

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

The official Presidential Residence of Los Pinos became an emblem of Mexico's opulence and presidential corruption.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.

The remains of an Aztec school and various intriguing artifacts lie below a modern cultural center.

Beneath the most controversial monument in Mexico City is a cultural center that exhibits only digital art.

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

Inside a busy metro station, an impressive mural depicts the prehispanic city of Tenochtitlán.