They had quite a few acts, trapeze artists, people doing flips and jumps on beams, crazy strong men doing flips and jumps, hoolahoop girls, acrobats etc etc etc. Plus clown acts between each act.
One particularly notable act was these two women who twisted and flipped around each other like they had no spine. You can see a picture of the above, they are the two small women with blue hair. It was only slightly creepy.