The Arecibo Observatory, also known as the National Astronomy and Ionosphere Center (NAIC) and formerly known as the Arecibo Ionosphere Observatory, is an observatory in Barrio Esperanza, Arecibo, Puerto Rico owned by the US National Science Foundation (NSF). The observatory also includes a radio telescope, a LIDAR facility, and a visitor center, all which are expected to remain operational after the damage from the main telescope collapse is assessed.