There are drawings of the outside of the theatre, but historians do not really know what the inside of the Globe looked like. They have had to use written descriptions, details from the building contracts, drawings of other theatres, and clues in the plays written to be performed in the Globe. In 1989 an archaeological dig at the site showed that the building was in the shape of a polygon, with 20 sides. They also discovered the building was 100 feet (30 m) in diameter.