https://www.andalucia.com/cities/seville/italica.htm
Pretty cool place. The website says there are “signs on the road” so it sounds like it still might be an uncrowded place. Although in 2016 the show Game of Thrones used it for filming.
Oops. Scrolling down I see that they sell tickets now, or perhaps that is for a special tour to see where they filmed or something. $30 euros??