We are traveling with our 1-year old daughter to Colorado for a relative's graduation from the University of Colorado at Boulder graduation in early May and plan to spend a week in the state. We are thinking about a few days in Boulder, Vail, and Denver. We are not hikers or skiers and are interested in seeing beautiful mountain views, quaint towns, history, art etc... We have Marriott points so that is why were were thinking of the three places I mentioned, plus we don't want to have to drive more than a few hours with our daughter in the car so Grand Junction, Durango and equidistant areas are out. We have not spent any time in Colorado before.

What would you recommend?