Ruins
Templo Romano
Once part of the Roman Forum, the remains of this temple, dating from the 2nd or early 3rd century AD, are a heady slice of drama right in town. It's among the best-preserved Roman monuments in Portugal, and probably on the Iberian Peninsula. Though it's commonly referred to as the Temple of Diana, there's no consensus about the deity to which it was dedicated, and some archaeologists believe it may have been dedicated to Julius Caesar.