Yellowstone National Park is a great place to go geyser gazing. There are many geysers to see in the park and if you hike around the thermal areas chances are you will see a geyser erupt. There are many geysers large and small and when they erupt in front of you it feels like you are getting a surprise present.
Geysers are not always predictable to know when they will erupt. But you can go to the visitor center in the Old Faithful area of Yellowstone National Park and they have estimated times of when some of the geysers will erupt. Then you can take a hike to the geyser and just maybe you will see it erupt.
Hiking out to a certain geyser can be part of the fun. You need to dress for the weather when you are out hiking in Yellowstone. The weather can change very quickly in the park so check the weather forecast before you start out. Rain and storms are not uncommon and can start unexpectedly any time of the day. If rain is in the forecast take rain gear with you. If the weather is cold wear warm clothes. Wear comfortable hiking shoes in any weather since you will be doing plenty of walking. You may want to take along sun screen and a hat that will hold tight onto your head in a wind. I have seen many hats that have blown off of someone’s head into thermal water. Once a hat is in the water there is no retrieving it.
Sun glasses can help keep your eyes protected in the sun but keep in mind that if they get splashed with geyser water they may be marked forever since the thermal water does not wash off of glasses.
You may want to take along some snacks and water to drink. Once in the thermal areas there is no where to get water or snacks. Plan on carrying your trash out with you since there are no trash cans on the trails.
Any geyser in Yellowstone Park is amazing and fun to watch. Old Faithful is probably the most predictable and amazing to watch. Grand Geyser is huge and can leave you waiting for some time since it is not too predictable. Anemone is a small geyser but it has a short amount of time between eruptions so you can go anytime and you will not have to wait long for it to erupt. Take your camera with you to catch the beauty of the Yellowstone National Park geyser eruptions. You can find more information on geyser gazing at http://www.tripadvisor.com/Travel-g60999-c10794/Yellowstone-National-Park:Wyoming:Geyser.Gazing.html