Glenveagh National Park & Castle

Ireland's second-largest national park is a must-see for visitors to this region. There is no better way to admire the scenic views than by following one of the many walking or cycling trails. The park is also a red deer conservation ground. If you work up an appetite, stop for a snack at the 19th-century Victorian castle - as did Greta Garbo during her 1967 visit to Donegal.