Stargate

Stargates, also called Astria Porta in Ancient and Chappa'ai in Goa'uld, as well as various other names across the universe, are a series of devices, built by the Ancients, which create wormholes, allowing for near-instantaneous transportation between two distant points in space. The Stargates are often considered to be the Ancients' greatest creation and thus, the Ancients are often referred to as the Gate Builders. The Ancients, the Asurans, the Tollan (with the help of the Nox), and the Ori are the only known races capable of constructing Stargates.