Napa Valley - Calistoga's Old Faithful Geyser

In Calistoga, we managed to visit this Geyser place, where we're able to see this geyser. This geyser is one of the world's Old Faithful geyser (I don't know how they rank it). It costs us USD 7.00 in order to watch the geyser. The place itself is also powered by the thermal energy produced by the steam/geothermal. Here's some pictures taken.