 The Montjuïc was selected as the site for several of the venues of the 1992 Summer Olympics, centred on the Olympic stadium.Extensively refurbished and renamed the Estadi Olímpic Lluís Companys, the 65,000-seat stadium saw the opening and closing ceremonies and hosted the athletic events.Around it the "Anella Olímpica" (the "Olympic Ring") of sporting venues was built, including the Palau Sant Jordi indoor arena, the "Institut Nacional d'Educació Física de Catalunya state", a centre of sports science; the "Piscines Bernat Picornell" and the "Piscina Municipal de Montjuïc", the venues for swimming and diving events respectively; and the striking telecommunications tower, designed by the architect Santiago Calatrava.