Heritage Open Day: Step inside this grand building, built in 1902-03. Ever wondered what's behind the doors of Cheltenham Town Hall? This Heritage Open Day, find out for yourself. Step inside this grand building, built in 1902-03 to host Cheltenham's balls and concerts, and admire its striking architecture, including the Main Hall's Corinthian columns and coved ceilings. Wander at your own pace on a self-guided tour. Our cafe will be open throughout the day for refreshments.