Properties and attractions will be opening their doors for free, as part of the annual Heritage Open Days event next month.

The long weekend provides a once-a-year chance to discover architectural treasures and enjoy tours and activities that bring history to life.

The 2014 showcase, from Thursday, September 11, to Sunday, September 14, is extra-special too, as it marks the event’s 20th anniversary.

Attractions and properties to take part include Alnwick’s Bailiffgate Museum, Cragside, in Rothbury, Lindisfarne Castle, Wallington and the Flodden Peace Centre.

Belford will be a hive of activity during the Heritage Open Days event, with its Hidden History Museum, as well as the Grade I-listed Belford Hall taking part.

People will also have the chance to see the village’s ecological self-build house, on West back Lane, while St Mary’s Parish Church holds a Northumbrian crafts and flower festival (see story, right).

All Saints Parish Church, in Rothbury, and Biddlestone RC Chapel, in Biddlestone Village, Netherton, will be opening their doors.

There will be a number of guided walks during the weekend, including one led by Michael Mountney around the Bamburgh area and back via a circular route including part of St Oswald’s Way.

There will be separate treks exploring the Flodden and Homildon Hill battlefields. Meanwhile, David Barker will lead a hike from Hepburn Woods featuring Chillingham and Ros castles, Hepburn Bastle and Fort.

Morpeth, Berwick and other areas of Northumberland are also hosting events and activities over the weekend.

Not all of the attractions/activities in the county take part every day of the event.