Denver's Museo de las Américas is one of the only institutions anywhere that focuses on the art of the Southwestern United States, along with that of Mexico, Central and South America and the Caribbean, and it programs it all from within the modest facilities on Santa Fe Drive. But Museo director Jose Aguayo has always been a big dreamer. Ten years ago, he brought the Museo from dream to reality, and now he'd like to do the same with a dramatic and architecturally significant planned addition and alteration of the currently non-distinct building. The design -- cooked up by RoTo Architects of Los Angeles, a nationally renowned firm headed up by famous architect Michael Rotondi -- completely reconfigures the space, adding studios and a row of artists' lofts. The most exciting feature will be an elaborate facade reminiscent of the fabulous Mayan Theatre's -- a logical choice, since both are meant to recall the architecture of the ancient Mayans.