Visit the famous Rua Augusta Arch, which offers a 360 view of Lisbon and the river. Inside the iconic building, there is an exhibition in the Clock Room to learn a bit about the history of the arch.
The access to the spiral staircase of the arch is at the southern end of Rua Augusta across the street from the Praca do Comercio.
Tickets: €3.00 or free with the Lisboa Card. FREE for children under 7.