Two-year-old Nathan Beckwith of Rochester, N.H., greets a Shoestring Theater puppet during the Old Port Festival parade Sunday in Portland. Ben McCanna/Staff Photographer

Adam Wendell-Pearson of Shoestring Theater rides a bicycle-powered dragon down Exchange Street during the Old Port Festival parade. Ben McCanna/Staff Photographer

Everett Devensih, 7, of Scarborough bounces on a bungee swing while Felix Correia, 6, of South Portland descends a climbing wall on Federal Street during Old Port Festival. Ben McCanna/Staff Photographer

Rion Hergenhan brings more cowbell to the Old Port Festival parade. Ben McCanna/Staff Photographer

A group of puppets known as the Bahianas, of Shoestring Theater, marches down Exchange Street during the Old Port Festival parade. Ben McCanna/Staff Photographer

Circus Maine instructor Brian Tully juggles down Exchange Street at the start of the Old Port Festival parade. Ben McCanna/Staff Photographer

Portland Mayor Ethan Strimling leads the Old Port Festival parade aboard a scooter. Ben McCanna/Staff Photographer

Stilt walker Greg Frangoulis of Shoestring Theater prepares to lead the Old Port Festival parade down Exchange Street. Ben McCanna/Staff Photographer

A Circus Maine student bends over backwards on Exchange Street for the Old Port Festival parade. Ben McCanna/Staff Photographer

Circus Maine instructors Kerry Kaye, left, and Brian Tully carry students on their shoulders during the Old Port Festival parade. Ben McCanna/Staff Photographer