Salvador is notable in Brazil for its cuisine, music and architecture, and its metropolitan area is the wealthiest in Brazil's Northeast, its poorest region. Over 80% of the population of metropolitan region of Salvador has Black African ancestry, the African influence in many cultural aspects of the city makes it the center of Afro-Brazilian culture and this reflects in turn a curious situation in which African-associated cultural practices are celebrated. The historical center of Salvador, frequently called the Pelourinho, is renowned for its Portuguese colonial architecture with historical monuments dating from the 17th through the 19th centuries and has been declared a World Heritage Site by UNESCO in 1985.Salvador is located on a small, roughly triangular peninsula that separates Todos os Santos Bay from the open waters of the Atlantic Ocean. The bay, which gets its name from having been discovered on All Saints' Day forms a natural harbor. Salvador is a major export port, lying at the heart of the Recôncavo Baiano, a rich agricultural and industrial region encompassing the northern portion of coastal Bahia. The local terrain is diverse ranging from flat to rolling to hills and low mountains.A particularly notable feature is the escarpment that dividesSalvador into the Cidade Alta ("Upper Town" - rest of the city) and the Cidade Baixa ("Lower Town" - northwest region of the city), the former some 85 m above the latter, with the city's cathedral and most administrative buildings standing on the higher ground. An elevator (the first installed in Brazil), known as Elevador Lacerda, has connected the two sections since 1873, having since undergone several upgrades.The Deputado Luís Eduardo Magalhães International Airport connects Salvador with Brazilian cities and also operates international flights, and the city is home to the Federal University of Bahia.