If seeing the sights is on your list of things to do, head to Tarragona Amphitheatre— just one of the landmarks located 0.5 mi (0.8 km) from central Tarragona. Hotels.com travelers also say the area is walkable and has lots of nice beaches.
You can study the exhibits at National Archaeological Museum of Tarragona, a museum with a storied past, during your trip to Tarragona. While you're in the area, stroll along the beautiful beaches.