St Peter’s Seminary was built in 1967, within the grounds of the Kilmahew Estate overlooking the Firth of Clyde. The seminary provided residential teaching accommodation for priests. In 1980, the training of priests moved to an outreach model, thus making the seminary redundant. The complex is seen as one of the finest pieces modernist architecture in Scotland and the derelict buildings now sit on register of the 100 most important buildings at risk in the world. In 2008, Hoskins Architects were commissioned by Historic Scotland and the developer Urban Splash to develop proposals to bring the derelict buildings back through a new use.
Hoskins Architects' proposals centre around a rethinking of the entire site to create a coherent masterplan that exploits the mature landscape setting of the estate as well as the reuse of the buildings. The site is reconceived as a unique resort destination providing hotel accommodation within the original accommodation block, a new build element on the site of the now demolished Kilmahew House and a series of individual houses within the grounds. The original teaching block, refectory and chapel are converted to create new restaurant, function and spa facilities.