The circus was another open aired oval venue where people used to see horse and chariot racing. It first appeared in major cities around 500BC and worked it's way to the popularity it holds today. It was made out of mud-brick and stone and the people used to sit on a stair shaped seat. Usually it had a length of 245m to around 621m. Furthermore the venue could hold up over 15,000 people each time. It was developed from the Ancient Greek construction called the Stadium.
The amphitheatre was a very important building in the Roman period throughout the Roman Empire. It was an open aired venue where people used to entertain themselves by watching gladiator fights, music and drama. It was usually built from stone or mud-brick and had a capacity of around 45,000 people in total. It also had a luxurious watching places especially for the government.
History of Architecture is a Blog/Encyclopaedia about History of Architecture going through all the periods explaining them in detail and showing examples.