to La Granja. Unfortunately Philip's heir, King Louis I, died that same year, and Philip had to return to the throne. Consequently, a place designed for leisure and quiet retreat thus became an important meeting place for the King, his ministers and the court. The town of San Ildefonso expanded to provide housing and services to the courtiers who wanted a place near the king's favourite residence. Military barracks, a collegiate church (1721–1724, built to designs of Teodoro Ardemans, and dedicated to the Holy Trinity, 22 December 1723), and even a royal glass factory (1728) were built to provide for the palace. The glass factory, which had some initial successes from 1720 at Nuevo Baztan in the province of Madrid, was moved under the direction of its Catalan foreman, Ventura Sit, to San Ildefonso, where supplies of timber were plentiful, and a royal patron was near. The best glass of Venetian type produced in the works dates from the last quarter of the 18th century. As La Granja de San Ildefonso, the glassworks continue today as a subsidiary of Saint Gobain. The church was selected as his burial site by Philip, marking a break with his Habsburg predecessors. The frescoes by Giambattista Tiepolo, completed by Francisco Bayeu, were badly damaged in a fire of 1918. Philip's successor Ferdinand VI bequeathed the royal site of San Ildefonso, with all it contained, to his father's second wife, Isabel Farnese, who was effectively forced to live there, well away from Madrid politics, for the duration of his reign. She maintained a considerable court there. At her death in 1766, it reverted to the Crown in the person of her son Charles III. For the next one hundred and twenty years, La Granja was the court's main summer palace, and many royal weddings and burials, state treaties, and political events took place within its walls. However, from the 1880's the court preferred to sojourn at the seaside palaces in the Basque Country and the royal site became rarely used. In 1918 a major fire damaged the palace and although the damage was repaired much of the interior decoration and contents were lost. Currently the royal site is part the Patrimonio Nacional of Spain, which holds and maintains many of the Crown's lands and palaces. It is a popular tourist attraction, with gardens, and interiors displaying rooms with marble from Carrara, Japanese lacquer, and crystal