Last year, I visited Cannes. On my first day, I climbed a small hill up to a church. From there you had a wonderful view down to the city, but also to west with the long beach and some mountains on the other side of the bay. I was there during sunset and the light was wonderful. I could make some picture of a very dramatic sunset in Cannes.
In the evening, the sun was behind the clouds, but you could see at least some parts of the sun. And the clouds created a wonderful scene with shadows and lights. It was totally impressive.
I was able to shot this sunset in Platanias on Crete during a stay there, 2 years ago. Especially the sun beams, created by the clouds were really impressive. It was a special atmosphere when the sun hits the horizon.