The Stargates are often considered to be the Ancients' greatest creation, and so the Ancients are often called the Gate Builders.
The Stargates, also called the Astria Porta in Ancient and the Chappa'ai in Goa'uld, are a series of devices, built by the Ancients, that create artificial subspace wormholes, allowing for near-instantaneous transportation between two distant points in space. ' That is how we're supposed to travel light years across the galaxy to other planets.' - Cameron Mitchell
