Porto, Italy
The Tower of D. Pedro Pitões (Portuguese: Torre de D. Pedro Pitões/Torre da Cidade) is a former-medieval fortification situated in the civil parish of Cedofeita, Santo Ildefonso, Sé, Miragaia, São Nicolau e Vitória, that protected the northern Portuguese city of Porto.
Listen to the audio guide for Tower of D. Pedro Pitões Free on WIP — starts by itself when you arrive, even with the screen off