Arches and domes are structures that exhibit structural strength and can span large areas with no intermediate supports.
Source: Boundless. “Arches and Domes.” Boundless Physics. Boundless, 21 Jul. 2015. Retrieved 20 Aug. 2015 from https://www.boundless.com/physics/textbooks/boundless-physics-textbook/static-equilibrium-elasticity-and-torque-8/applications-of-statics-77/arches-and-domes-314-11286/