membership of the Augustales, priests of the Imperial Cult. Also, he organised Greek and Latin performances lasting four days, the first evidence of Greek cultural events in Pompeii. Conservation Objects buried beneath Pompeii were well-preserved for almost 2,000 years as the lack of air and moisture allowed little to no deterioration. However, Pompeii has been exposed to natural and anthropic deterioration following excavation. Weathering, erosion, light exposure, water damage, poor methods of excavation and reconstruction, introduced plants and animals, tourism, vandalism and theft have all damaged the site in some way. The lack of adequate weather protection for all but the most interesting and important buildings has allowed original interior decoration to fade or be lost. Two-thirds of the city has been excavated, but the remnants of the city are rapidly deteriorating. Furthermore, during World War II many buildings were badly damaged or destroyed by bombs dropped in several raids by the Allied forces. The conservation concern has constantly worried archaeologists. The ancient city was included in the 1996 World Monuments Watch by the World Monuments Fund, and again in 1998 and in 2000. In 1996 the organisation claimed that Pompeii "desperately need[ed] repair" and called for the drafting of a general plan of restoration and interpretation. The organisation supported conservation at Pompeii with funding from American Express and the Samuel H. Kress Foundation. The Schola Armatorum ('House of the Gladiators') collapsed in 2010 caused by heavy rainfall and lack of proper drainage. The structure was not open to visitors, but the outside was visible to tourists. There was fierce controversy after the collapse, with accusations of neglect. Today, funding is mostly directed into conservation of the site; however, due to the expanse of Pompeii and the scale of the problems, this is inadequate in halting the slow decay of the materials. A 2012 study recommended an improved strategy for interpretation and presentation of the site as a cost-effective method of improving its conservation and preservation in the short term. In June 2013, UNESCO warned that if restoration and preservation works "fail to deliver substantial progress in the next two years," Pompeii could be placed on the List of World Heritage in Danger. A "Grande Progetto Pompei" project of about five years had begun in 2012 with the European Union and included stabilization and conservation of buildings in the highest risk areas. In 2014, UNESCO headquarters received a new management