Killarney is a town in County Kerry, southwestern Ireland. The town is on the northeastern shore of Lough Leane, part of Killarney National Park, and is home to St Mary's Cathedral, Ross Castle, Muckross House and Abbey, the Lakes of Killarney, MacGillycuddy's Reeks, Purple Mountain, Mangerton Mountain, Paps Mountain, the Gap of Dunloe and Torc Waterfall. Its natural heritage, history and location on the Ring of Kerry make Killarney a popular tourist destination.