RJ C
Google
it is advisable to either take the petite train to the top of the fort, it's a spectacular view around the coast, and the winding roads snaking up to the mountain a wonder. I would then advise to take time to walk around the fort as the train only stops for a few minutes before returning. you can then walk down if it's not too hot to enjoy the smell and scenery of the vineyards. It is about an hour back down towards Coullier, otherwise wait for the next train which will be about the same time.