The first permanent playhouses were built in London in the 16th century, including the Curtain in 1577 and the Globe in 1599. These playhouses were round or octagonal in shape, about 12 meters high with a diameter of 25 meters. The stage projected into the center area, surrounded by three tiers of galleries. There was no curtain, and plays were performed in daylight with minimal props relying on the audience's imagination. Actors changed costumes in the tiring house at the rear of the stage.