A rather nice attraction to visit. Prepare your costume to get yourself wet in the lake... clean lake. But parking is at 9€ though...
How can you not be dazzled by a building built more than 1500 years ago that stands upright and blends into nature?
Paid parking of course but if it is to help maintain the surrounding area then why not!
Access to several beaches for swimming in the river, nice restaurant, idyllic setting.
Improvement: grow trees or sun protection in the parking lot, beneficial for protecting cars from heat and thus consuming less on the days of strong camels, walkers, and the planet while preserving the environment ;-)