They’re a chance to look deeper into West Yorkshire’s past as buildings are opened, guided walks led, and new resources made available.
In previous years there would have been more of a focus on historical buildings throwing their door open to the public.
But those leading the events have had to be a little more creative this year.
Here, we’ve put together a list of just a few what will be available to see from September 9 to 18 in Wakefield, Calderdale and Kirklees.
For more information and to book where needed, visit www.heritageopendays.org.uk

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Heritage Open Days will be held from September 9-18 - What will you discover? Photo: jpress

. Discover Wakefield - a City of Sculpture and Public Art - Guided Walk
Sunday, September 11 at 2.30pm: Join Wakefield Civic Society President, Kevin Trickett MBE for a walk looking at art and sculpture visible in and around the city centre. On this walk, Kevin will point out details you might never have noticed and help you to discover some of the intriguing artwork that is visible just by strolling around Wakefield's streets - and sometimes looking up. For more information and book, visit www.experiencewakefield.co.uk/event/heritage-open-days Photo: Jpress

. Guided Walk of Westgate
Wednesday, September 14 at 2.30pm and Sunday, September 18 at 2.30pm: The walk will explain some of the interesting architectural and heritage features to be found in what is one of the city's most historic streets while telling the story of how the area has developed over time. Visit www.experiencewakefield.co.uk for further information and to book. Photo: jpress

. Mental Health Museum: Fieldhead at 50
Saturday, September 17 from 10am-4pm . Fieldhead Hospital opened in the 1970s and now you can step back in time to experience the food, music and images of the decade that changed Britain. The family-friendly 1970s themed event will explore the first 50 years of Fieldhead Hospital's history with guided tours and craft activities. Find out how mental health care has evolved and discover the stories of people who have worked at and accessed services at Fieldhead through our unique and thought-provoking collection. Visit www.experiencewakefield.co.uk for more information and to book. Photo: jpress

. Nostell
Thursday, 15 September/Friday, September 16/Saturday, September 17 from 10am-5pm. Visit Nostell as the gates are thrown open welcoming everyone to see inside the gardens and house. Visit the hidden Menagerie Garden, or take in the Chippendale furniture in the house. The gardens and house at Nostell will be available for visitors on the Heritage Open Days to visit free of charge. Visitors can wander the rose and kitchen gardens, have a go on the adventure play area, walk around the lakes, visit the hidden menagerie garden or head up to obelisk park. There's two cycle trails at Nostell for visitors who bring their bikes. Photo: jpress

9. Domesday Book to Methodism via Wesley and a time of unrest
Saturday, September 10 and Sunday, September 11 from 10am-4pm. At Clifton Methodist Church, Towngate, Brighouse. Visit a Chapel built by miners as an independent Methodist chapel, and view the history of the growth of Methodism and the connection with the Luddites in the ancient village of Clifton. Photo: google

10. Bankfield Museum
Sunday, September 11, 10am-4pm. Bankfield Museum, Boothtown Road, Halifax. Visitors will have the opportunity to step inside the grand italianate mansion and enjoy the variety of its exhibitions programme, ranging from the world exclusive of costumes from the BBC TV series of Gentleman Jack, featuring costumes by renowned designer Tom Pye, to Fashion in Anne Lister's Time, which explores the many different styles of fashion during her lifetime, using both Calderdale Museums collections and items loaned from museums across the country, There is also a special exhibition celebrating 600 years of Shibden Hall's history and many of its inhabitants and features images by renowned artists such as John Horner as well as objects from throughout the hall's history. Photo: Google maps

11. Calderdale Industrial Museum
Saturday, September 10 and Sunday, September 11 from 10am-4pm. Last entry 3pm. Come and see the working looms, machines and engines at Calderdale Industrial Museum. Re-opened and run almost entirely by volunteer enthusiasts who believe that the industrial heritage of Calderdale should be preserved and shared with everyone, the museum houses a special collection representing the wide variety of industries that developed in Calderdale in the last 250 years. Our volunteers will show you around and explain the history of Calderdale and how our exhibits fit into the picture. They are also always interested to hear about your own experiences in local industry. Visit www.heritageopendays.org.uk for more information. Photo: jpress

12. Dean Clough Heritage Walking Tours
Saturday, September 10/ Tuesday, September 13 and Thursday, September 15 from 10am-2pm. The Dean Clough site covers 22 acres, originally one million sq.ft + of floor area, stretching over half a mile end to end, consisting of 16 significant buildings. These magnificent Grade II listed Victorian mills were constructed between 1840 and 1870 by the Crossley family who founded their Crossley Carpet empire here in 1822. The buildings are built with the same stone quarried from, and adopting the name of, the valley in which they sit: Dean and Clough being old English words respectively meaning valley and ravine. For more information and to book, visit www.heritageopendays.org.uk. Photo: jpi