The La Diagonal Area was one of the four Olympic Areas earmarked for urban planning for the XXVth Olympiad of Barcelona’92. The development of the respective plans was commissioned to the architects Maria Rubert de Ventós and Oriol Clos. The La Diagonal Area was remodelled to improve it as a gateway to Barcelona by interconnecting highways with neighbouring municipalities and the new bypasses built at that time, such as the Ronda de Dalt. Initially, this Area offered the highest number of useful sports facilities for the Olympic Games, such as the Camp Nou and other selected FC Barcelona facilities, the Estadi del RCD Espanyol (RCD Espanyol football club Stadium) in the Sarrià neighbourhood, the Real Club de Polo de Barcelona (Barcelona Royal Polo Club) and a reasonable number of 4- and 5-star hotels.
Even though a closed complex for the whole area was unable to be built, mainly because it was an integral part of the urban fabric, the wide streets typical of the area made it possible to create priority lanes for the organisation. This generally resulted in very little traffic congestion, even at peak times. This and the La Vall d’Hebron Area together formed the so-called ‘mountain’ Olympic Areas, whereas the Parc de Mar and Montjuïc Areas were known as the ‘sea’ Olympic Areas. The investment made in the La Diagonal Area totalled €33.3 million (5.53 billion Pesetas).