County Donegal contains several notable natural landmarks and attractions. Slieve League contains the sixth highest sea cliffs in Europe that are over 600 meters high, offering scenic views of Donegal Bay. Ards Forest Park features forest trails and historic sites amongst sandy beaches and rivers. Killybegs is the largest fishing port in Ireland and a center for fishing and processing industries, located on a scenic harbor. Bundoran Beach is a popular surfing destination on Donegal Bay, known for its sea stacks and cliff walks. Glenveagh National Park features natural landscapes and woodlands surrounding a Scottish castle, home to Ireland's largest herd of red deer.