Sun tower of Planta Solar 10 and mirrors, seen from the air. This system of huge mirrors on the ground are controlled by computer, they follow the route of the sun to heat the salt brine in the top of the tower. Part of the Solucar solar complex owned by Abengoa energy, in Sanlucar La Mayor, Andalucia, Spain. January, 2020. SajtoFoto (PressPhoto) Hungary Photo Competition 2021 Category Winner - Nature series. 3 of 8.