At Empire Square (Praça do Império), near the Tagus riverside  in Lisbon. Nearby there are several monuments which are related with the Portuguese Discoveries, namely the Belém Tower (Torre de Belém) and the Hieronymites Monastery (Mosteiro dos Jerónimos) - which are classified by UNESCO as a World Heritage Site - and the Monument to the Discoveries (Padrão dos Descobrimentos) that celebrates the Portuguese who took part in the Age of Discovery of the 15th and 16th centuries.