One of the best things to do in Killarney, Ireland is visiting Killarney National Park. Killarney National Park is one of the most beautiful places in Ireland and located within the charming Irish town of Killarney, which is worthy of spending a bit of time in itself. There are a number of ways to see Killarney National Park. You could take a nice walk to Ross Castle from town, hire a jaunty cab, or rent a bike! I opted for a combination of walks and biking during my two days in Killarney. Upon arrival in Killarney, I walked to Ross Castle