But since the exterior was of lime and plaster, and a decahedral form had no advantage, Katherens may well have constructed a circular building as Hollar indicates.    From Wordnik.com.  [Shakespearean Playhouses A History of English Theatres from the Beginnings to the Restoration] Reference

The Swan was decahedral; Visscher represents the "Bear.    From Wordnik.com.  [Shakespearean Playhouses A History of English Theatres from the Beginnings to the Restoration] Reference