If 17th Street is truly the Wall Street of the West, then the Ideal Building -- which now holds Colorado Business Bank -- lies at the intersection of art and commerce. At the two-story entrance, menacing marble bison guard bronze doors decorated with American Indian dance motifs. Inside, a frieze encircles the richly appointed lobby, paying tribute to the theme of money in history and its sacred importance in our lives today. Designed in 1907 by engineer Montana Fallis for Charles Boettcher's Ideal Cement Company, Denver's first multi-level, all-reinforced concrete building celebrates its hundredth anniversary this year. With interest compounded.