http://travel.usnews.com/Lisbon_Portugal/Neighborhoods/
The church and the monastery, like the nearby Torre de Belém and Padrão dos Descobrimentos, symbolise the Portuguese Age of Discovery and is among the main tourist attractions of Lisbon. In 1983, UNESCO formally designated the Monastery of the Hieronymites and Tower of Belém as a World Heritage Site.
http://en.wikipedia.org/wiki/Jer%C3%B3nimos_Monastery