The Praça do Comércio is located in the city of Lisbon, Portugal. Situated near the Tagus river, the square is still commonly known as Terreiro do Paço , because it was the location of the Paços da Ribeira until it was destroyed by the great 1755 Lisbon earthquake. After the earthquake, the square was completely remodeled as part of the rebuilding of the Pombaline Downtown, ordered by Sebastião José de Carvalho e Melo, 1st Marquis of Pombal, who was the Minister of the Kingdom of Portugal from 1750 to 1777, during the reign of Dom José I, King of Portugal.

More details: https://en.wikipedia.org/wiki/Pra%C3%A7a_do_Com%C3%A9rcio