Thousands of rare aerial photographs of some of Scotland's most recognisable landmarks have been made available to view online.
The photographs, from the first half of the 20th century, include bird's-eye views of the Forth and Tay bridges, the Wallace Monument, Edinburgh's Princes Street, the Caledonian Canal, Glasgow Green and Hampden Park.
They also show the luxury hotel and golf resort at Gleneagles, the seaside town of Oban, in Argyll, Balmoral Castle and the A8 road between Glasgow and Edinburgh.
More than 5,000 images from the Aerofilms Collection have been conserved and digitised in a "painstaking" conservation process.
The website britainfromabove.org.uk will eventually feature some 95,000 images taken between 1919 and 1953, showing the changing face of Britain.
Many of the pictures were taken by veterans of the First World War, who experts say had "specialist skills" for capturing images from the air.
The images were conserved, catalogued and digitised by the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), its sister organisation in Wales and English Heritage.
Due to their age and fragility, many of the earliest plate glass negatives and old photographic prints were said to be close to being lost forever.
Aerofilms' archive collection was acquired by the nation in 2007 when the company was facing financial difficulties.
Britain from Above allows users to download images for free and share personal memories, as well as adding information to help enrich the understanding of the story behind each one.
They can also help identify the locations of a number of "mystery" images that have left the experts stumped.
Rebecca Bailey, head of education and outreach at the RCAHMS, said: "The history of Aerofilms is inextricably linked to the history of modern Britain.
"Between 1919 and 1953, there was vast and rapid change to the social, architectural and industrial fabric of Britain, and Aerofilms provides a unique and at times unparalleled perspective on this upheaval.
"We hope that people today will be able to immerse themselves in the past through the new website, adding their own thoughts and memories to this remarkable collection."
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