On a huge lot shaped almost like a square, the stadium is arranged diagonally with respect to the road network, while the hockey arena (which stands on the area formerly occupied by the athletics field) follows the orientation of Piazza d’Armi just like the swimming-pool, which takes up a corner of the lot facing Corso Galileo Ferraris. The essential shapes of the stadium of the thirties, nearly entirely realised in reinforced concrete, are blurred today by a new composite and technological guise, due to the presence of a third ring of steps, the steel structure, and seats put in all sectors which have reduced the original capacity of standing room for 65,000 to a little more than 26,000 seats.

The swimming pool, under the control of the Superintendency of Environmental and Architectural Heritage, retains its original appearance outside, with a symmetric art deco façade. The building’s structure is very interesting: seven portals in reinforced concrete, with the swimming pool raised off the ground (one of the few of its kind in Italy) also realised in reinforced concrete. The whole facility has been renovated and was reopened in 2006. The hockey arena, with over 12,000 seats, was designed by Arata Isozaki, Studio Archa, Pierpaolo Maggiora. It consists of a volume of 183x100 metres suspended on a 5-meter high base with window overlooking the park, and covered by ashlar masonry steel panels. The structure, which required considerable unobstructed light, is also in steel. To keep the building as low as possible, the hockey rink was positioned at a height of 7.5m and the stands were arranged partly underground and partly above ground. This solution has enabled the designers to avoid putting in cumbersome emergency exit stairs, which instead are short paths which immediately lead from the stands to outside. As spectators enter the building they find themselves half way up the stands and either descend or ascend to find their seat.