Purchase a ticket and join the crowds at a game at Avantidrome. If there's nothing scheduled while you're in town, you might like to check if the stadium offers a guided tour of the grounds.
You'll need to pay an entrance fee, so bring some cash and get set for a good time. But Avantidrome isn't the only place to visit in the picturesque town of Cambridge. You'll find other worthwhile sights such as Cambridge Raceway, Cambridge Farmers Market and Cambridge Museum close to the sporting facility.