I lived near Calafell for many years. I visited this site a few times, including once as part of a school trip. It does a good job at making what you have read

I lived near Calafell for many years. I visited this site a few times, including once as part of a school trip. It does a good job at making what you have read in a textbook come to life, even for an area where ancient ruins are common. The article mentions Tarragona. Definitely visit Tarragona if you want to see very well conserved and documented ruins of a large Roman city.