USA - Chaco Culture

"For over 2,000 years, Pueblo peoples occupied a vast region of the south-western United States. Chaco Canyon, a major centre of ancestral Pueblo culture between 850 and 1250, was a focus for ceremonials, trade and political activity for the prehistoric Four Corners area. Chaco is remarkable for its monumental public and ceremonial buildings and its distinctive architecture – it has an ancient urban ceremonial centre that is unlike anything constructed before or since. In addition to the Chaco Culture National Historical Park, the World Heritage property includes the Aztec Ruins National Monument and several smaller Chaco sites managed by the Bureau of Land Management." 

Source: UNESCO World Heritage

Postcard 1
Pueblo Bonito of Chaco Canyon National Monument, New Mexico, USA. Thanks to Jocelyn of New Mexico for this nice postcard.

Postcard 2

Aztec Ruins National Monument: Follow ancient passageways to a distant time. Explore an Ancestral Pueblo great house of over 500 masonry rooms. Look up in those rooms and see original timbers holding up the roof. Search for the fingerprints of ancient workers in the mortar. Listen for an echo of ritual drums in the reconstructed Great Kiva. Adventure into the past. Postcard shows the view of Kiva - a room used for religious ceremonies by the ancient Pueblo Indians. Thanks to Jim of Arizona, USA.