Built on the northern bank of the Tagus between 1514 and 1520 as part of the Tagus estuary defence system, the Tower of Belém is one of the architectural jewels of the reign of Manuel I.

Created by Cottinelli Telmo (1897–1948) and the sculptor Leopoldo de Almeida (1898–1975), Padrão dos Descobrimentos was first erected in 1940, in a temporary form, as part of the Portuguese World Exhibition, built with perishable materials. It had a light iron and cement frame, while the moulded sculpture had a light iron and cement frame, while the moulded sculpture was made of gypsum (formed of plaster and burlap, and reinforced by a wooden and iron structure). The monument was reconstructed in 1960 to mark 500 years since the death of the Infante Dom Henrique (Henry the Navigator). This time it was made of concrete and rose-tinted Leiria stone masonry, with the sculptures made of Sintra limestone masonry.

The Jerónimos Monastery, also called Hieronymites Monastery, is along with the Tower of Belém, one of the most visited sites in Lisbon. UNESCO declared it a World Heritage Site in 1983. This landmark is called Mosteiro dos Jerónimos in Portuguese

In the first half of the 18th century, King John V planned to build a summer residence in the Ajuda hill. The building of this Royal Palace in this place, however, would take place only after the Earthquake of 1755 which destroyed the royal residence, Paço da Ribeira (Ribeira Palace), at the Terreiro do Paço (Palace Public Square). On King José I 's initiative, the Royal Palace of Ajuda was built on the grounds acquired by his father firstly as a wooden building - commonly known as the Real Barraca (the Royal Hut) which burned to the ground in 1794 - and then as the Palace as it is nowadays.