Among Siza’s other unusual projects are a water tower for the University of Aveiro, designed as a reinforced concrete slab and parallel cylinder which rise out of a reflecting sheet of water.
"The form of this water tower serving the university campus was developed in collaboration with a structural engineer. Two elements support the cubic water tanks: a vertical fin wall of 15 centimeters thickness and a cylinder permitting access to the storage tank. The fin wall and cylinder are connected by two stainless steel braces. The reinforced concrete construction rises from a shallow reflecting pool."
Brigitte Fleck, Peter Testa: Álvaro Siza, Birkhäuser Verlag, Basel 1992, p.150