Watch Old Faithful erupt on video and and explore exciting FAQs about Yellowstone’s most famous geyser. Marvel at the Old Faithful Inn. The Old Faithful Inn was designed by Robert C. Reamer, who wanted the asymmetry of the building to reflect the chaos of nature. Renting a snowmobile in the United States: Renting a snowmobile and the equipment is a great way to sample the beauty and fun of snowmobiling….