Kelmarsh Hall in Northamptonshire, England, is an elegant, 18th-century country house about 5 miles south of Market Harborough and 11 miles north of Northampton. It is a Grade I listed house and is open to public viewing. The present Palladian hall was built in 1732 for William Hanbury, a famous antiquarian, by Francis Smith of Warwick, to a James Gibbs design; the hall is still today surrounded by its working estate, and comprises both parkland and gardens.