Situated in the heart of napa valley old faithful geyser of california is one of only three geysers in the world with the designation old faithful as you might expect this one shoots water high up in the air regularly usually every 30 minutes though sometimes even more frequently bring a picnic or purchase snacks at the gift shop take in a game of bocce and relax on the grass or at a picnic table as you enjoy the sight and sound of old faithful geyser erupting