The document discusses the development of permanent theaters in late 16th century London, including the construction of The Theatre, the Curtain, the Rose, the Swan, and the Curtain. It describes the architecture of these theaters, noting they were round or octagonal in shape, approximately 25 meters in diameter, with three tiers of galleries surrounding a partially covered stage. The internal layout included an actors' dressing room and space for audiences in the pit or seated galleries. Actors belonged to playing companies and had to quickly learn new roles, sometimes taking on multiple parts in a single performance. Boys played female roles until their voices broke during this period.