Old Faithful itself is cool. Then the boardwalks in that area have a lot of other geysers. They aren't all always spouting but there's usually at least some. We spent quite a bit of time in that area when we went a year ago and saw some geysers spouting that aren't very common. So it was fun. The downside is there are often a lot of people in that area but the parking lot is still huge. Given the weather, there may not be a ton of people there.