A Doors Open event is to return to Aberdeenshire this weekend.
Held over two days, it will involve a variety of castles, estates, museums and churches.
Some will be included for the first time, such as Blairs Museum and Beannachar Camphill Campus, both on South Deeside Road.
The National Trust for Scotland will take part for a second year but this time Castle Fraser will be added to the programme of events.
In total, 48 buildings are taking part, which is up from 38 the previous year.
Councillor Peter Argyle, chairman of Aberdeenshire Council’s infrastructure services committee, urged the public to find out more about places taking part.
He said: “Doors Open Days provide a great opportunity to celebrate our local heritage, explore some of the many assets we have here on our doorstep and do something different for a day.
“Please have a look on the website to see what might interest you.”
A number of buildings that have proved popular in previous years have returned for this weekend’s event.
They include Tod Head Lighthouse in Catterline and Braemar Castle, plus Glen Tanar Estate is opening a number of its properties to the public.
In Banff, an old merchant’s house with its own private lookout tower dating back to 1676 will be open again, along with the new Silver Smithy Centre. Maggies Hoosie, Sandhaven Meal Mill and the Fraserburgh Heritage Centre will be participating, along with the Salmon Bothy in Portsoy.
As part of the Year of Young People, Doors Open Day will also be targeting schools to encourage children to learn about the history, architecture and culture in Aberdeenshire.
As part of the Aberdeenshire event, the history of a Stonehaven church is to be told through a new augmented reality app.
St James Church on Arbuthnott Street will offer the virtual tour to visitors, showcasing the most notable and interesting parts of the listed building.
The app is the first phase of a permanent exhibition called Exhibition Spaces, which will present events and milestones in the 330-year history of the Episcopal Church.
Professor Peter Sharp, chairman of the church, said: “As a Grade A-listed building dating back to 1877, St James is a truly historic part of Stonehaven and the surrounding area with many areas of interest for visitors to see.
“The events planned for autumn are the first time that the history of the church has been celebrated in such a way using 21st Century technologies.
“Special thanks go to the Vestry and other volunteers for their work on these activities.”
Iain Hawkins, the National Trust for Scotland’s general manager for the north-east, said: “We’re looking forward to sharing these beautiful Aberdeenshire places this weekend.
“We really hope they’ll be inspired to join the Trust and support all we do for the love of Scotland.”