Porto, Italy
The Tower of Pedro-Sem (Portuguese: Torre do Palácio dos Terenas/Torre de Pedro-Sem/Torre da Marca) is a medieval fortification situated in the civil parish of Lordelo do Ouro e Massarelos, that protected the northern Portuguese city of Porto.
Listen to the audio guide for Torre de Pedro-Sem Free on WIP — starts by itself when you arrive, even with the screen off