In 1992, the Universal Exposition was held for six months in Seville, on the occasion of which the local communications network infrastructure was greatly improved: the SE-30 beltway around the city was completed, new highways were constructed, the new Santa Justa train station had opened in 1991 and the Spanish High Speed Rail system, the "Alta Velocidad Española" (AVE), began to operate between Madrid-Seville. The Seville airport, the " Aeropuerto de Sevilla", was expanded with a new terminal building designed by the architect Rafael Moneo, and various other improvements were made. The monumental "Puente del Alamillo" (Alamillo Bridge) over the Guadalquivir, designed by the architect Santiago Calatrava, was built to allow access to the island of La Cartuja, site of the massive exposition, as was the "Puente de la Barqueta" (Barqueta Bridge) designed by Juan J. Arenas and Marcos J. Pantalerón that now connects the historic center of Seville with the technology park. Some of the installations remaining after the exposition at the massive site on La Cartuja island were converted into the largest technology park in Andalusia: the Scientific and Technological Park Cartuja 93. The greenspace and artificial lakes of the Alamillo Park are a legacy of the exposition as well; the present theme park, Isla Mágica, is a re-purposing of the Lago de España zone of the exposition.