If you've ever have wanted to pet a stingray, see exotic sea creatures, and even a tiger, then the Denver Aquarium is the place for you! Come join your brothers for an exhilarating walk through the fun exhibits at the aquarium. Tickets will be bought the morning of. Cost is TBD but $10 maximum. ***Timing is an estimate from the time we will leave Boulder until we are back in Boulder - it's a 40 min drive and google says average time spent there is 2.5 hours.