Abstract: A structure having dimensions for transportation on an airplane, and which when assembled into a module has sufficient headroom for an average height person. The structure includes two portions, a top portion and a bottom portion. The top portion fits over and envelopes the bottom portion prior to assembly. The pre-assembly structure is thus easily transportable. To form the module, the top portion is raised to a higher level using pneumatic compressors. Folding walls are also provided in the structure, which when unfolded form the walls for the module. The folding walls may further include doors also provided in a folded form. The pre-assembled structure is designed for ease of construction to form the corresponding module. Several such modules may be combined to form a building.