Donald Seawell “created the Denver Center for the Performing Arts in 1972. The 12-acre Denver Performing Arts Complex covering four square blocks is the largest performing-arts facility in the nation at one location.” Now he’s 94 and stepping down as chairman after 34 years. “Seawell’s transfer to ‘chairman emeritus’ marks what some are calling the most significant leadership shift at any Denver arts organization in the city’s history.”