The medical pool offers a total of 8,990 beds and, according to the Union of the Hospitals of Pernambuco, recorded in the year 2000 an invoicing of R$220 million (Brazilian Reals). It is thanks to the pool that Pernambuco has access to more computed tomography devices than more developed countries such as Canada or France. A large portion of the modern hospitals included in the pool are located between the neighbourhoods of Derby and of the Ilha do Leite. The Hospital Real Português de Beneficência Portuguesa em Pernambuco, or "Hospital Português" (Portuguese Hospital) for short, is one of the most renowned hospitals in the country. Many people from neighbouring states go to Recife for treatment, as it has the largest and best medical facilities in the North–Northeast of Brazil. Recife has three universities / medical schools for medicine, two public, Federal University of Pernambuco and University of Pernambuco; and one private, Escola Pernambucana de Medicina FBV/IMIP (Medical School of Pernambuco). Many events taking place during the year include:  Because of its geographic location, tourism and city infrastructure, Recife's convention centers are of a high standard. The two centers are:  The third largest convention center in Brazil. A modern theatre with 1,931 seats and of exposition area located on the university campus. Celebrations, holidays and other events are numerous throughout the year. The New Year begins at the beach, Praia de Boa Viagem and in Old Recife. The carnival of Recife and Olinda (which has its historic town centre considered a world heritage site by UNESCO in 1982) begins many weeks ahead in December with innumerable balls and parades. In the city, the carnival festivities begin in January, as locals begin preparing for the official Carnival, which starts the week before Shrove Tuesday and Ash Wednesday in the Christian liturgical calendar. The pre-Carnival parties usually consist of percussion groups practising in local clubs, city streets and squares, and even Carnival balls. There is a variety of rhythms from different cultures. Carnival officially starts with the Galo da Madrugada, a party in Downtown Recife where people call old Recife, that attracts many people from several states of Brazil, and other parts of the world. Recife has many quality 3, 4 and 5-Star International Hotels as well as Pousadas (traditional Bed & breakfast) and Apart-Hotels, totalling more than 11,500 bedrooms and this number increases to over 30,000 when the metropolitan area is considered.