Abstract: A structure includes a hub and a plurality of elongated substantially rigid support members, each rigid support member having a distal end and a proximal end, the proximal end configured to contact an outer surface of the hub. The structure further includes a plurality of elongated substantially flexible support members, each flexible support member configured to couple at least the distal ends of two of the rigid support members. The flexible support members are in tension and the rigid support members are in compression to maintain the structure at equilibrium. A plurality of structures can be assembled and joined to form various modular structures.