We were skiing in Snowmass and took a break from the slopes to visit the Aspen Rec Center for swimming (lazy river, slides etc), the climbing wall, and ice skating (all inside). There is also tobogganing outside. Fee is reasonable. Would suggest calling ahead to see when each thing you are interested in opens (for example on the day we were there, the climbing wall only opened at noon and the ice rink only opened at 12:30 as a local team was practicing in the morning). A fun time for kids big and small and with your day pass, you can come and go all day.
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