Jon Knight, who oversees design senior principal at Populous, describes the changes being made to the Board of Trade Building (4800 Main St.). The 49-year-old building will soon be the new home of Populous, the Kansas City-based architecture firm specializing in sports stadiums and arena design, as well as various other tenants.

The 2015 Kansas City Architecture Series examines how historic buildings in Kansas City’s downtown area have been repurposed and given new life.