What shape was the first globe theatre?

The first Globe Theatre was an open-air amphitheatre. It was roughly circular in shape, with a diameter of about 100 feet (30 metres) and a seating capacity of about 2,000 people. The stage was located at one end of the theatre and was surrounded by three tiers of roofed seating. The roof of the theatre was supported by wooden columns and was made of thatch.