That was a given. Medieval structures that I have been introduced to while in France. But then, a 1st century BC ruins and Roman at that? I was overwhelmed after seeing my first ancient Roman temple ruins!
Barcino (now Barcelona) was then a colony of the Roman Empire established by the Roman Emperor Augustus around 15-10 BC atop Mons Taber. A thriving settlement was established and had roman structures and one of this is said to be a forum of which, only the columns remain now. These are said to belong to the Temple of Augustus.
The temple ruins, said to be built in the 1st century BC were discovered in the 19th century but larger parts of the structure were already absorbed in the current standing structures that only these fluted columns with corinthian capitals and the podium where it stands remain.
I didn’t actually know of this structure until a friend, Rita, that I got to know and meet in Barcelona, led me to it. She says, however, that, based on her studies, the temple might have actually been dedicated to Heracles, considering that one of the street names near it is named after that demigod.
The location can be confusing and is hidden but do ask around if you’re not sure. Address: Centre Excursionsta de Catalunya, Carrer del Paradís.