Buy a ticket to watch a game at Northeast Delta Dental Stadium. If there's nothing happening while you're in town, you might like to check if there's a tour of the grounds.
You'll have to pay to visit this sporting facility in the waterfront neighborhood of Downtown, so check the cost before you go. If you're eager for more adventures after you've been to Northeast Delta Dental Stadium, Southern New Hampshire University Arena, Palace Theater and Mall of New Hampshire aren't far away.