Belém Tower

Belém Tower (Portuguese: Torre de Belém, pronounced [to ð lj]; literally: Bethlehem Tower), officially the Tower of Saint Vincent (Portuguese: Torre de São Vicente), is a 16th-century fortification located in Lisbon, Portugal, which served as a point of embarkation and disembarkation for Portuguese explorers and as a ceremonial gateway to Lisbon. The tower symbolizes Portugal's maritime and colonial power in early modern Europe. It was built during the height of the Portuguese Renaissance and is a prominent example of the Portuguese Manueline style, but it also incorporates other architectural styles, such as the minarets, which are inspired by Moorish architecture. The structure was built from lioz limestone, a material local to the Lisbon region, and is composed of a bastion and a 30-metre (100 ft) four-storey tower. Since 1983, the tower has been a UNESCO World Heritage Site, along with the Jerónimos Monastery. It is often portrayed as a symbol of Europe's Age of Discoveries and as a metonym for Portugal or Lisbon, given its landmark status. It has incorrectly been stated that the tower was built in the middle of the Tagus and now sits near the shore because the river was redirected after the 1755 Lisbon earthquake. In fact, the tower was built on a small island in the Tagus river near the Lisbon shore.

In the late 15th century, King John II had designed a defence system for the mouth of the Tagus that depended on the fortresses of Cascais and São Sebastião (or Torre Velha) in Caparica on the south side of the river. These fortresses did not completely protect the river's mouth, and further protection was required. In his "Chronicle of John II" (Chronica de D. Joao II), which appeared in 1545, the author Garcia de Resende affirmed the king's opinion that the defences of Lisbon were inadequate, and that he had insisted on building fortifications along the entrance to the River Tagus to supplement the existing defences. To this end, he ordered the "making of a strong fort", but died before any plans were drawn. King Manuel I of Portugal revisited the proposal twenty years later and ordered the construction of a military fortification on the northern margin of the Tagus at Belém. In 1513, Lourenço Fernandes wrote a letter to his friends referring to the king's intention of constructing a tower near Restelo Velho, having determined it to be essential.

The presence of this military element was also a celebration of the round trip of the Portuguese to India and a way of receiving the fleets that arrived at the mouth of the Tagus, glorifying the feat, as if it were a mimetic of what those who arrived could identify with what they had seen in the East. The best example is the carved rhinoceros, the result of an offer from an Indian ruler who offered it to King Dom Manuel. This Rhinoceros would be the same one that Albrecht Dürer would immortalize in his drawings.The project was started on a basaltic rock outcrop a short distance from the riverbank, using some of the stone being collected to build the Monastery of Santa Maria de Belém. The tower was designed by military architect Francisco de Arruda, named "Master of the works of the Belém stronghold" by King Manuel, and in 1516 he began receiving 763 blocks and 504 stones for its construction, delivered by Diogo Rodrigues, treasurer for the project. As construction progressed, a man-of-war called the Grande Nau (Great Ship), a heavily armed, 1000–ton ship continued to guard the estuary at the mouth of the Tagus until the fort's completion. The building was finished in 1519, just two years before Manuel's death, and Gaspar de Paiva was temporarily stationed to command the fortress; his commission was made permanent on 15 September 1521, when he was appointed the first Captain

Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).