Praça do Comércio & Rua Augusta Arch

Praça do Comércio · Arco da Rua Augusta

A yellow-arcaded square on the river, with a rooftop arch

Hours

Square always open. Arch viewpoint daily 10:00–19:00 (per 2026 guides; check on site)

Tickets

Square free. Arch viewpoint about €3.50 (per 2026 guides; check on site), free with the Lisboa Card

Address

The riverside square at the south end of Baixa; the arch opens onto Rua Augusta on its north side

This square was laid out where the royal palace stood before the 1755 earthquake flattened it. Yellow arcaded ministries frame three sides; the fourth opens straight onto the Tagus, where the Cais das Colunas steps run down into lapping water. Behind the equestrian statue of King José I stands the Rua Augusta Arch, and through it the pedestrian Rua Augusta runs dead straight to Rossio. The top of the arch is a small viewpoint, reached by a lift and a spiral stair, looking over the square, the river and the castle.