The Guangxi Planning Exhibition Hall is a city-and-region showcase, the kind of museum where scale models, maps and development displays explain how Nanning sees its future. It is most interesting if you like urban geography, infrastructure or the way Chinese cities present themselves to residents and visitors.
Do not expect an art museum or historic site. The appeal is in the big models and the official story they tell about growth, transport and regional identity. Pair it with newer districts of Nanning or the Guangxi Nationalities Museum for a fuller picture of the city beyond the older centre.