The Colorado Golf Club's largest home has hit the market with an asking price of $5 million. Built in 2009, the 16,544-square-foot, six-bedroom, 10-bathroom residence at 7750 Preservation Trail in Parker was designed by architect Don Ruggles, CEO of Denver-based Ruggles Mabe Studio. The European-style home features an exterior including river rock and hewn stone and a grand interior with vaulted ceilings and custom craftwork. "The architecture is really unique," listing agent Susie Langford,…