Part of the visit to Saintes is to tour the ruins of the Roman Coliseum on the West bank of the River. It is a half hour walk up the hill to the area where you can also visit the Basilique Saint Eutrope de Saintes. The day began sunny and walking up the hill was hot work in the full sun. Later the sky clouded over and the visit to the coliseum was happily somewhat cooler.
The Coliseum at Saintes is one of the best preserved Roman Ruins in France so it is well worth the visit. There is a 3 Euro charge to enter, not a lot of money and there were a few visitors the day we were there but not crowded so it was perfect to explore the site.