Interior Space and Exhibition Design Nanjing City Wall Museum Exhibition Hall by Yuan Zhuang Nanjing City Wall Museum exhibition hall is an interior space that presents the history of the Nanjing City Wall. The hall covers 2500 square meters on the basement floor, with ceiling heights of six and four meters. Five zones explain the wall's construction, preservation and cultural value. An array space built from nearly a thousand inscribed city bricks is supported by steel structures. Fair-faced concrete and custom aluminum panels form the display walls. More than twenty interactive modules, including 3D sandboxes and tactile artifacts, serve visitors of all ages.