Palasport, Ravenna (Italy)
Designed by Renzo Piano, the indoor sports arena in Ravenna has a shell-shaped roof with a diameter of 100 m. The roof is made up of thin prefabricated concrete elements and covers the entire surface of the arena, including the seating areas accommodating up to 5000 spectators.
Comune di Ravenna
RPBW – Renzo Piano con Shunji Ishida, Flavio Marano, Ottavio Di Blasi, Mario Cucinella
Claudio Zambonin e Eros Grava