The BBC Scotland news website is featuring a set of images from the Royal Commission on the Ancient and Historical Monuments of Scotland.
The Big Picture series will offer a unique perspective on Scotland's built environment.
RCAHMS is responsible for recording, collecting and interpreting information on everything from archaeological sites and architecture to aerial images.
The series is launched with a striking image to mark St Andrew's Day.
The magnificent stained glass window depicting Scotland's patron saint can be found next to the pulpit in Monimail Parish Church, Fife.
RCAHMS, which is based in Bernard Terrace, in Edinburgh, manages a huge library of material.
Education and Outreach Operational Manager Alan Muirden said he hopes Scotland's Big Picture series will encourage more people to use its facilities.
People can view more than 70,000 digital images and search for information on more than 250,000 buildings or sites.
There are in excess of one million aerial photographs and about 2.5 million other photographs, drawings and manuscripts available.
Mr Muirden said: "The commission collects, records and interprets information on the architectural, industrial, archaeological and maritime heritage of Scotland.
"Whether you are working, teaching, studying or simply exploring your local heritage, RCAHMS resources are available to assist your research.
"We hope that featuring examples of our archive material on The Big Picture will encourage BBC website visitors to use our online databases and mapping services."