Walls of Lisbon - Credit: Wikimedia Commons
Walls of Lisbon - Credit: Wikimedia Commons
The walls of Lisbon are a series of three nested defensive stone-wall complexes built at different times to defend Lisbon. They consist of the São Jorge Castle proper and its walls (the Cidadela or Citadel) the Cerca Moura (or Cerca Velha) (lit. the Moorish Walls), its lateral extension the Muralha de D. Dinis (King Denis's wall), and the Cerca Fernandina (Ferdinand's wall). If it was remade into a 1 m high wall, the masonry in the Ferca Fernandina would stretch from Lisbon to Porto, approximately. Read more on Wikipedia
Source: en.wikipedia.org