The Monastery of the Hieronymites (Jerónimos) was built by King Manuel I of Portugal in 1501 on the site of an earlier church, Santa Maria de Belém, on the banks of the River Tagus at the entrance of Lisbon. It is built in the Manueline architectural style, particular to Portugal, with elements of the Late Gothic and Renaissance periods. Close to the Monastery lies a fortress known as the Belém tower, built in 1514, which has two parts, the tower itself with four vaulted rooms and the bulwark containing a casemate with artillery.