The British Isles
Country houses, walled gardens, coast.

Northampton Castle
Northampton · East Midlands — United Kingdom
Northampton Castle is a château at Northampton, England, in the United Kingdom. The recorded building campaign dates from the 11th century. Its architecture is recorded as Norman architecture. The register records it as “scheduled monument”. Details are drawn from Wikidata.

Northwood House
Cowes — United Kingdom
Northwood House is a château at Cowes, England, in the United Kingdom. The recorded building campaign dates from the 18th century. The register records it as “Grade II* listed building”. Details are drawn from Wikidata.
Norwich Castle
Norwich — United Kingdom
Norwich Castle is a château at Norwich, England, in the United Kingdom. The recorded building campaign dates from the 11th century. The register records it as “scheduled monument”. Details are drawn from Wikidata.

Nottingham Castle
City of Nottingham — United Kingdom
Nottingham Castle is a château at City of Nottingham, England, in the United Kingdom. The recorded building campaign dates from the 11th century. The register records it as “scheduled monument”. Details are drawn from Wikidata.
Nuneham House
Nuneham Courtenay · South East England — United Kingdom
Nuneham House is a château at Nuneham Courtenay, England, in the United Kingdom. The recorded building campaign dates from the 18th century. The register records it as “Grade II* listed building”. Details are drawn from Wikidata.

Oakfield Manor
Upton-by-Chester — United Kingdom
Oakfield Manor is a château at Upton-by-Chester, in the United Kingdom. The recorded building campaign dates from the 19th century. The register records it as “Grade II listed building”. Details are drawn from Wikidata.

Odiham Castle
Odiham · South East England — United Kingdom
Odiham Castle is a château at Odiham, in the United Kingdom. The recorded building campaign dates from the 13th century. The register records it as “scheduled monument”. Details are drawn from Wikidata.

Ogmore Castle
St Brides Major community — United Kingdom
Ogmore Castle is a château at St Brides Major community, Wales, in the United Kingdom. The recorded building campaign dates from the 12th century. The register records it as “scheduled monument”. Details are drawn from Wikidata.

Okehampton Castle
Okehampton · South West England — United Kingdom
Okehampton Castle is a château at Okehampton, in the United Kingdom. The recorded building campaign dates from the 11th century. The register records it as “scheduled monument”. Details are drawn from Wikidata.

Old Breachacha Castle
Argyll and Bute — United Kingdom
Old Breachacha Castle is a château at Argyll and Bute, Scotland, in the United Kingdom. The recorded building campaign dates from the 15th century. The register records it as “category A listed building”. Details are drawn from Wikidata.
- Object type under review
Old Falinge
Rochdale — United Kingdom
Old Falinge is a château at Rochdale, England, in the United Kingdom. The recorded building campaign dates from the 18th century. The register records it as “Grade II listed building”. Details are drawn from Wikidata.

Old Fold Manor
London Borough of Barnet — United Kingdom
Old Fold Manor is a château at London Borough of Barnet, England, in the United Kingdom. The recorded building campaign dates from the 18th century. The register records it as “Grade II listed building”. Details are drawn from Wikidata.
Old Hall Hotel
High Peak · East Midlands — United Kingdom
Old Hall Hotel is a château at High Peak, England, in the United Kingdom. The recorded building campaign dates from the 17th century. The register records it as “Grade II* listed building”. Details are drawn from Wikidata.
- Object type under review
Old Mountjoy
County Tyrone — United Kingdom
Old Mountjoy is a château at County Tyrone, Northern Ireland, in the United Kingdom. The recorded building campaign dates from the 18th century. The register records it as “Grade B+ listed building”. Details are drawn from Wikidata.

Orford Castle
Orford — United Kingdom
Orford Castle is a château at Orford, England, in the United Kingdom. The recorded building campaign dates from the 12th century. The register records it as “Grade I listed building”. Details are drawn from Wikidata.

Orielton House
Hundleton — United Kingdom
Orielton House is a château at Hundleton, Wales, in the United Kingdom. The recorded building campaign dates from the 17th century. The register records it as “Grade II* listed building”. Details are drawn from Wikidata.

Ormesby Hall
Redcar and Cleveland — United Kingdom
Ormesby Hall is a château at Redcar and Cleveland, England, in the United Kingdom. The recorded building campaign dates from the 18th century. The register records it as “Grade I listed building”. Details are drawn from Wikidata.

Osborne House
East Cowes — United Kingdom
Osborne House is a château at East Cowes, England, in the United Kingdom. The recorded building campaign dates from the 19th century. Its architecture is recorded as Renaissance Revival architecture. The register records it as “Grade I listed building”. Details are drawn from Wikidata.
- Object type under review
Oughtrington Hall
Lymm — United Kingdom
Oughtrington Hall is a château at Lymm, in the United Kingdom. Its architecture is recorded as Neoclassical architecture. The register records it as “Grade II listed building”. Details are drawn from Wikidata.

Owlpen Manor
Owlpen · South West England — United Kingdom
Owlpen Manor is a château at Owlpen, in the United Kingdom. The recorded building campaign dates from the 17th century. Its architecture is recorded as Tudor architecture. The register records it as “Grade I listed building”. Details are drawn from Wikidata.

Owston Ferry Castle
Owston Ferry · Yorkshire and the Humber — United Kingdom
Owston Ferry Castle is a château at Owston Ferry, England, in the United Kingdom. The recorded building campaign dates from the 12th century. The register records it as “scheduled monument”. Details are drawn from Wikidata.

Oxford Castle
Oxford — United Kingdom
Oxford Castle is a château at Oxford, England, in the United Kingdom. Its architecture is recorded as Norman architecture. The register records it as “scheduled monument”. Details are drawn from Wikidata.

Oxon Hoath
West Peckham · South East England — United Kingdom
Oxon Hoath is a château at West Peckham, in the United Kingdom. Its architecture is recorded as châteauesque. The register records it as “Grade II* listed building”. Details are drawn from Wikidata.

Oxwich Castle
Penrice — United Kingdom
Oxwich Castle is a château at Penrice, Wales, in the United Kingdom. Its architecture is recorded as House of Tudor. The register records it as “scheduled monument”. Details are drawn from Wikidata.