One hundred images of Scotland's most treasured landmarks are to be put to the public vote.
The Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS) has published its extraordinary collection online.
The archive will form the basis of two major exhibitions in 2008 - the organisation's centenary year.
The Heritage Lottery Fund said it would provide £554,000 of funding for the Treasured Places project.
The image archive includes aerial photographs, intricate survey drawings, fascinating original architects' drawings and plans, and rare historical photographs.
The collection features pictures of Scotland's most famous landmarks, celebrated buildings and ancient sites.
It also includes places that represent the everyday history of the nation, such as hospitals, swimming baths and tenement flats.
Among the famous landmarks in the archive are the Forth Rail Bridge, Wallace Monument and Iona Abbey.
A shortlist of 10 images will be announced in October and these will be displayed in exhibitions at Edinburgh's City Art Centre and one that will tour 10 venues across Scotland.
Scotland's favourite archive image will be announced in December.
Siobhan McConnachie, project manager for Treasured Places, said: "The images in the 100 selection show the great variety of places that are treasured by people for many different reasons.
"Some are places you might expect, but others are not, and that adds to the interest of what can make a place treasured."
Colin McLean, of the Heritage Lottery Fund, said: "To date RCAHMS's unique archive is really mainly used by academics and professionals.
"This innovative project will open it up to a huge audience."
Voting will take place on the specially created website and by post to RCAHMS.