There's nothing like a day at the fair. When you're looking for fun things to do in Topsham, Maine, consider making a stop at the fair for your entertainment. Topsham Fair has all the bells and whistles, from harness racing and truck pulling to the demolition derby. At the Topsham Fair, our goal is to celebrate Maine's thriving agriculture. This year marks 164 years of that celebration. You'll find family-friendly fun at the fair.