Thursday 8th - Sunday 11th September is the annual Heritage Open Days 'weekend' when historic sites, buildings, etc are open to the public. Some are open throughout the year but for this wekend only, there is no admission charge. For Yorkshire details ... http://www.heritageopendays.org.uk/directory/region/county/yorkshire/ Unfortunately, the links to the 4 Yorkshire pages are broken but I have informed Heritage Open Days head office so hopefully they will be fixed soon<fingers crossed> Keep checking back!