Grab tickets to watch a game at Breffni Park. If there's nothing on while you're in the area, you might like to check if the stadium offers a guided tour of the grounds.
When you've spent some time at this sporting facility in Cavan, why not make your way to Killykeen Forest Park, County Cavan Golf Club, and Cavan Central Library and Heritage Centre? They're near Breffni Park and also a hit with tourists.