In 1995, St. Charles purchased a 40,000-square-foot, 9-year vacant, run-down, mid-century modern office building at the corner of Tremont and Colfax. The classic 1950s landmark, designed by Fisher and Fisher, incorporates a colorful interplay of glazed brick, enameled steel panels, brushed aluminum trim, and expansive glass windows. St. Charles completed a substantial renovation of the Tremont Center and pre-leased 100% of the building to the City and County of Denver and the Denver US Mint.