Consider asking local artists if they would like to display sculpture in the grounds. this is the Cone and Vessel - Sculpture Trail - Forest of Dean.
A giant acorn cup and pine cone - by 'giant' I mean sort of about a metre high each, was created by the Sculptor Peter Randall in 1988 and placed beside a woodland path. Now ageing with lichen and, perhaps, a bit of moss.
Cone and Vessel - Sculpture Trail Forest of Dean near to Brierley, Gloucestershire, Great Britain
Parikkalan patsaspuisto / Parikkala Sculpture Park, Parikkala, Finland. Art by Veijo Rönkkönen
quiet-nymph: malformalady: An art installation of green plants growing on the wall of the building next to the CaixaForum Madrid a modern art gallery In Madrid Spain. The living wall was created by french botanist Patrick Blanc Patrick Blancs Website
Official homepage of South African land artist Strijdom van der Merwe. Strijdom uses found materials on-site to create installations, as well as create sculptures in response to a landscape, urban space or theme.