Littledean Hall is a country house in the village of Littledean, Gloucestershire, England. It has been described as one of the most haunted houses in England and is thought to be the oldest house in the United Kingdom which is still occupied. Saxon and Celtic remains have been uncovered in the cellars. Part of the house is designated an SSSI as it is a proven breeding roost for the Greater Horseshoe Bat (Rhinolophus ferrumequinum).
Sylvan House Barn is a 0.005-hectare (0.012-acre) stone built barn near the village of St Briavels, in the Forest of Dean, Gloucestershire. Because of its breeding bats, the site was notified as a biological Site of Special Scientific Interest in 1995.
Swanpool Wood and Furnace Grove is a 13.59-hectare (33.6-acre) biological Site of Special Scientific Interest, in Gloucestershire in South West England. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).
Lower Wye Gorge is a 65-hectare (160-acre) biological and geological Site of Special Scientific Interest in Gloucestershire, notified in 1954 and renotified 1987. The site includes two Gloucestershire Wildlife Trust nature reserves being Ban-y-gor Wood and Lancaut. The Natural England citation states a revision for Lancaut inclusion.
Upper Wye Gorge is a Site of Special Scientific Interest (SSSI), noted for its biological and geological characteristics, around Symonds Yat in the Wye Valley on the Wales–England border. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).
Nagshead SSSI is a 297 acres (120 ha) biological Site of Special Scientific Interest located within RSPB Nagshead, near Parkend, in the Forest of Dean, Gloucestershire.
Astridge Wood is a 19.42-hectare (48.0-acre) biological Site of Special Scientific Interest in Gloucestershire, England, notified in 1985. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).
Bigsweir Woods is a 48.16-hectare (119.0-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1984. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).
Blaisdon Hall is a Grade II* listed building at Blaisdon. It includes a 0.07-hectare (0.17-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1995.
Caerwood And Ashberry Goose House is a 0.01-hectare (0.025-acre) biological Site of Special Scientific Interest in Gloucestershire, England, notified in 1991. The site was previously notified as Caerwood, Tidenham and lies within the Wye Valley Area of Outstanding Natural Beauty.
Devil's Chapel Scowles is a 44.79-hectare (110.7-acre) biological Site of Special Scientific Interest in Gloucestershire, notified England, in 1998. The site lies in the Forest of Dean and has four units of assessment by Natural England.
Dingle Wood is a 9.95-hectare (24.6-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1972. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS). The wood is located within the Forest of Dean Forest Park and the Wye Valley Area of Outstanding Natural Beauty.
Highbury Wood is a 50.74-hectare (125.4-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1983.
Pennsylvania Fields, Sedbury is a 27.03-hectare (66.8-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1985.
Shorn Cliff And Caswell Woods is a 69.2-hectare (171-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1986. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).
Slade Brook is a 3.63-hectare (9.0-acre) biological and geological Site of Special Scientific Interest in Gloucestershire, notified in 2003.
The Hudnalls is a 94.4-hectare (233-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1972. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).
Westbury Brook Ironstone Mine is a 15.69-hectare (38.8-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1998.
Wigpool Ironstone Mine is a 34.88-hectare (86.2-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1998.
Lippets Grove is a 5-hectare (12-acre) nature reserve in Gloucestershire. The site was leased from the Forestry Commission in 1987 and is managed by the Gloucestershire Wildlife Trust. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).
