It looks like an average circus. The name is transcribed on a light green and purple sign in yellow text. There is also a blue flag on top.
Role in episode
SpongeBob and Patrick come here to see the performance. After the performance, SpongeBob goes to see the clowns. He sees that one of them cannot get to his food, so he tries to feed him. However, the ringmaster denies SpongeBob from doing so. Soon after, the clowns pack up and go home, but forget to bring the clown SpongeBob was trying to feed.