The images merge photographs of High Royds in Menston when it was a psychiatric hospital with the present day as the site is being renovated into modern apartments.

They come from the Reflecting High Royds exhibition created by local historian Mark Davis as a lasting legacy of one of the last purpose-built Victorian mental health hospitals until it closed in 2003.

The exhibition has proved to be so popular with locals that it is set to stay on the former Ward 10 site at the Guiseley Social Club.

Mr Davis said: "The exhibition is going to remain indefinitely because there has been so many people visiting it and the website has had more than a quarter of a million picture hits.

"I have started to make some new images which involve me going back to the exact same site as some of the old pictures and then merging the two together. They are really very eerie and it makes you wonder what has happened in that exact same place that you are standing in.

"Ever since I started picturing the place there has been a massive interest and I have got to know a lot of people through it such as former members of staff and patients.

"People have sent me their memoirs and pictures to add to the website and it has even been linked up through a search engine as an educational tool.

"I have even been sent some pictures of the Second World War years when the British Expeditionary Force were sent to the hospital with war injuries.

The exhibition is free and open from 7 to 11pm and at the coffee shop in Guiseley between 9am and 5pm. Visitors do not need to be a member of the club to attend. To view more images, visit www.highroydshospital.co.uk or if anyone has any contributions contact highroyds.archive@gmail.com.