Atrium Event Center (The) Share: Wedding ServicesEvent PlannersEvent Center Atrium Event Center (The) Visit Website 2849 Gretna Rd., Suite 315 Branson, MO 65616 (417) 546-0027 Hours: By Appointment Only About Map About The Atrium Wedding and Event Center is a 3,000 sq ft space perfect to host your next wedding or event. We serve all events big and small; wedding to birthday. Contact us today to plan your next event! What's Nearby? Distance: 5 10 15 20 25 50 mi.