The Cotswold Water Park is the United Kingdom's largest marl lake system, straddling the Wiltshire–Gloucestershire border, northwest of Cricklade and south of Cirencester. The lakes were created in the second half of the 20th century by extraction of glacial Jurassic limestone gravel, which had eroded from the Cotswold Hills, and these filled naturally after working began to cease in the early 1970s.It is not a water fun park, as the name might suggest. It is a significant area for wildlife and particularly for wintering and breeding birds. The local Wildlife Trusts (Gloucestershire and Wiltshire) are involved in partnership with the Cotswold Water Park Trust in working with local communities and organisations in the area. The Cotswold Water Park Trust is an environmental charity working to improve all 40 square miles of the Cotswold Water Park for people and wildlife.

Pike Corner (grid reference SU036934) is a 15.2 hectare biological Site of Special Scientific Interest in Wiltshire, England notified in 1986.

Clattinger Farm (grid reference SU012933) is a 60.3 hectare biological Site of Special Scientific Interest in Wiltshire, notified in 1971. The site is managed as a nature reserve by Wiltshire Wildlife Trust.

Somerford Keynes (grid reference SU019952, pronounced "summerford canes") is a small village and civil parish in Gloucestershire, England, close to the River Thames and about 5 miles/8 km from its source. It lies on the boundary with Wiltshire, midway between Cirencester, Swindon and Malmesbury. The parish population at the 2011 census was 479. == Early history == A series of salvage excavations at Spratsgate Lane in 1986–1988 revealed part of an Iron Age and Roman settlement. The earliest finds were a series of curvilinear enclosures from the early 1st to the early 2nd century AD, which may have formed part of a farmstead.

Acres Farm Meadow (grid reference SU024927) is a 4.2 hectare biological Site of Special Scientific Interest (SSSI) in Wiltshire, notified in 1989. It lies between the villages of Somerford Keynes and Minety. The SSSI is the former site of a mediaeval ridge and furrow system which lies on the Upper Jurassic Oxford Clay. The site is home to grasses, sedges and herbs. Trees such as oak, maple, English elm (when notified, prior to Dutch elm disease) and hawthorn can be found in the hedgerows on the site, which provide nesting sites for lesser whitethroat, willow warbler, yellowhammer and bullfinch.