No matter what time of year you’re visiting Yellowstone, you can’t miss a trip to this legendary natural wonder. In spring and summer when crowds pack the area in front of Old Faithful, it’s best to view Yellowstone’s most famous geyser from the boardwalk path of the less crowded Upper Geyser trail. In winter without hordes of people, Old Faithful is even more impressive, especially when snow blankets the grounds and bison gather near the geysers.