We visited this location twice during our trip to San Gimignano. Once in the late afternoon and once in the morning around 8:00am. The light was completely different at both times and it's recommended getting up early to see the place with no one around. Everyone is goes to the overlook point next to the wine museum, but be sure not to miss walking into the small park with the olive trees and climbing the medieval steps up to a second, more hidden overlook. There, the view of the towers is spectacular and in the morning it's incredibly peaceful.
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