© All Rights Reserved One of several impressive buildings that form the street corners on Porto's Avenida dos Aliados. The Avenida is considered the proper centre of Porto and is overlooked by the town hallRelated images River Douro View from Ribeira to Arrabida - Porto View up to Clerigos Clerigos Tower - Porto Fountain - Crystal Palace Gardens Bolsa Palace from Praca Infante Dom Henrique Igreja dos Clérigos - Interior