Newton Park was laid out on land containing the 14th century keep and gateway of St Loe's Castle, a fortified medieval manor house, Elizabethan farm buildings, and various enclosed gardens.
It is 6 km (4 mi) west of Bath, Somerset, England between the A39 Wells Road and reaches right up to the residential roads of the village of Newton St Loe to its east. Some of the park is leased to Bath Spa University, who maintain the historic Georgian manor house and ornamental lakes, as well as Newton Saint Loe castle. The park is listed at just below the Grade I standard (grade II*). Corston Brook flowing through the west of the park can be described as terraced, with numerous weirs, which enable by the main buildings two large fish ponds, naturally shaped. Only 500 metres north of the park the brook feeds into the Avon.
The northeast point of the park narrowly excludes The Globe a public house on the roundabout junction of the A4, which is Grade II listed and a point on the edge of minor woods around the northern grounds marks the start of the A39 which travels from the grounds (just north of a listed pair of gatepiers, railings, outpiers and flanking quadrant walls to the park) SSW then W to Falmouth, Cornwall.
The Newton Park country house, which was built in 1762-5 by Stiff Leadbetter for Joseph Langton, is a Grade I listed building and is currently home to Bath Spa University's administrative staff. The country house was used as a Red Cross hospital to house Australian and New Zealand troops in World War I. The grounds include Newton St Loe Castle, comprising a keep, which was actually a part of a fortified mansion, and a 15th-century gatehouse, which are both Grade I listed.
- "Newton Park, Bath, England". Parks & Gardens UK. Parks and Gardens Data Services Limited (PGDS). Retrieved 9 June 2013.
- Newton Park (Park and Garden) Grade II* listing Historic England. "Details from listed building database (1000567)". National Heritage List for England.
- Historic England. "Details from listed building database (1365666)". National Heritage List for England.
- Colvin, Howard, A Biographical Dictionary of British Architects, 1600-1840 3rd ed. 1995, s.v. "Leadbetter, Stiff".
- "Newton Park". Images of England. Retrieved 19 November 2006.
- "History". Clifton RFC. Retrieved 6 August 2008.
- "Castle Keep in the Grounds of Newton Park". Images of England. Retrieved 19 November 2006.
- "Gatehouse, 35 m. to west of the Castle Keep". Images of England. Retrieved 19 November 2006.