The Museum Building is home to two impressive venues and a Theatrette.

The Great Hall, formerly known as the Maori Hall, is one of the largest rooms in New Zealand. The Maori Hall was the entrance and showpiece of the former Dominion Museum. A vast and dramatic space, the Great Hall is an ideal venue for larger events, including balls, dinners, displays, exhibitions and weddings.

The Tea Gardens is situated on the upper floor of the Museum building. During the 1940s and long before Wellington's now bustling café society existed, this was a popular meeting place. The Tea Gardens was converted into National Art Gallery space in the 1960s. During the restoration process in 2001, the once forgotten beautiful Royal Doulton wall tiles were rediscovered and the large windows once again uncovered. Today the Tea Gardens is a charming, light, airy space suitable for small to mid size events.