Piers and Emma build the first new listed castle in the UK for 100 years, complete with a tower, moat and futuristic tech. It's the biggest ever Grand Design, so is even their £2m budget enough?
Grand Designs is a Channel 4 TV series covering unusual architectural house-building projects, presented by Kevin McCloud.
The properties featured in the series vary wildly from homes underground to converted water towers, with the only common factor being that they're all rather unusual or extravagant in some way.
Grand Designs - Stratford-upon-Avon 2025 Synopsis and Schedule