Hill House, Helensburgh, Scotland
Designed by Charles Rennie MacKintosh

This building is a masterpiece of house design displaying a rich number of references to Scotland’s architectural past while being strikingly modern for its time.  Sadly it has been plagued with problems of water ingress.  For a truly excellent free document on the house, its history and the problems faced by the conservators I strongly recommend a multi-author report published by the National Trust for Scotland.