Locals here must be in good physical condition: the town´s cobblestoned streets go up and down and up again. These locals can enjoy themselves though, living in such a great city, wonderfully preserved and indeed very homogeneous in its looks.
I stayed here for three days, which is a good period to get to know the place. I visited museums and churches, but wandering around is also great fun. It doesn't matter where you're going, at about every street corner there's a great view.
Some great spots: the Igreja de Sao Francisco de Assis (with Aleidinhija carvings), the Museum de Oratorio, and the view down from the road to Mariana. You can also explore one of the huge old mines (Mina de Pasagem) just outside the town. Which I did, of course, becoming some kind of mining expert after visiting other mining WHS in Blaenavon (Wales) and Spiennes (Belgium).