The Aswan High Dam is a large dam located in Aswan, Egypt, built across the Nile River. It was constructed in the 1960s as a major engineering project to control flooding and provide hydroelectric power to Egypt. The dam is one of the largest in the world and has had a significant impact on the region, including the creation of Lake Nasser, a large reservoir which spans over 500 km. The dam has helped to improve agriculture and irrigation, provide electricity to millions of people, and also serves as a popular tourist attraction.