Corn Maze at Denver Botanic Gardens at Chatfield. Starting Sept. 13, the Gardens’ annual eight-acre corn maze is one of the most attended in the country and features a new design every year. A classic labyrinth of winding pathways is designed to mimic the Colorado state flag. Admission also includes access to the spider web, a mini-maze for children 12 and under and much more. Sept. 13 to Oct. 27: Fridays, 4-9 p.m.; Saturdays, noon to 9 p.m.; Sundays, noon to 6 p.m. $12; $10 Adult Member, Senior, Military; $8 Child ages 3-12; $6 Child Member; Free for children 2 and younger. http://www.botanicgardens.org/our-gardens/chatfield Denver Arts Festival. Denver Arts Festival at Sloan’s Lake hosts its first national juried fine arts festival Sept. 14th and 15th in Denver’s second large...