Photo: Acoma Pueblo Ladder

Acoma Pueblo, also known as "Sky City", is a Native American pueblo built on top of a 367-foot (112 m) sandstone mesa in the U.S. state of New Mexico. The Pueblo, believed to have been established in the 12th century or even earlier, was chosen in part because of its defensive position against raiders. It is regarded as the oldest continuously inhabited community in the United States. Both the mission and the pueblo are registered National Historical Landmarks. In 2006 the Acoma Pueblo was also named as a National Trust Historic Site.