Muckross Abbey is a historic ruin located in Killarney National Park, Ireland. Founded in 1448 by the Franciscan order, it served as a monastery for over 400 years. The abbey features beautiful Gothic architecture and is surrounded by lush gardens and ancient trees. Visitors can explore the remains of the church, cloisters, and the impressive graveyard, which contains the tombs of notable figures. The site is a popular destination for tourists, offering a glimpse into Ireland's rich religious and cultural history amidst the stunning natural landscape of Killarney.