Greenfort Gardens where the demesne was established 1815 with layout of the present garden established in 1920's. The Gardens cover 10 acres with formal and informal elements. Walled garden and orchard cultivated to supply house. 'Robert's Shrubbery' is a mixed informal planting with bamboo and escallonia; recently planted beech maze, rockery and herbaceous planting in front of house; 'Michael's Shrubbery'n- diverse rhododendron collection, an enormous Euchryphia specimen, Davidia involucrata, bog gardens and wild flower meadows.
Glenveagh Castle and Gardens are located in Glenveagh National Park. Glenveagh Castle, a 19th century castellated mansion built between 1867 and 1873. Henry McIlhenny, the last owner of the castle, served the Philadelphia Museum of Art as Curator of Decorative Arts and his expertise in this field is evident throughout the castle. Glenveagh National Park is located 24km north-west of Letterkenny and can be reached via the villages of Kilmacrennan or Churchill.