If your trip to Piatnica is all locked in but your itinerary is looking a little empty, let us give you a few hints and tips.Plan a stop at Park Wodny Łomża. It's one attraction you'll find on many visitors' must-do lists. If you still have some room on that travel itinerary, Forteczne Museum and Muzeum Polnocno Mazowieckie will keep you amused too.