Arguably Scotland's most significant modernist building, St Peter's was designed by Andy MacMillan and Isi Metzstein of Gillespie, Kidd and Coia and was built in 1966 as a college to train young priests. It went on to win the RIBA Gold Medal for Architecture, but was only in use for 14 years. After decades of abandonment, the derelict building is now registered as one of the World Monuments Fund's most endangered cultural landmarks.
Architect: Andy MacMillan and Isi Metzstein of Gillespie, Kidd and Coia
Building Date: 1966