Praça do Comércio (Terreiro do Paço)

Praça do Comércio, also known by its historic name Terreiro do Paço, occupies the site of the Ribeira Palace, the seat of the Portuguese royal court until the building and much of central Lisbon was destroyed in the 1755 earthquake, tsunami, and fires. The square was the centerpiece of the Baixa Pombalina, the grid-planned reconstruction of downtown Lisbon ordered by the Marquês de Pombal, chief minister to King José I, and it was designed as an open riverside plaza framed on three sides by symmetrical arcaded buildings originally housing government ministries and customs offices. At its center stands an equestrian bronze statue of King José I, cast in 1775 by sculptor Machado de Castro, showing the king on horseback trampling snakes, a common allegorical motif of triumph over chaos. The northern side of the square is marked by the Arco da Rua Augusta, a triumphal arch completed in 1875 that connects the plaza to the pedestrian Rua Augusta and the rest of the Baixa grid; visitors can climb the arch's viewing terrace for views over the square and river. The square served for centuries as Lisbon's principal ceremonial entry point from the sea, where monarchs, ambassadors, and dignitaries disembarked, and it was also the site of the 1908 assassination of King Carlos I and his heir, an event that hastened the fall of the Portuguese monarchy two years later. Long used for government offices, the arcaded buildings have been progressively converted since the early 2000s into museums, restaurants, and a visitor center, while the square itself remains an open public space paved in traditional Portuguese calçada stone.