I fancy having a look at some of these places.

Warwickshire: https://www.heritageopendays.org.uk/visiting/advanced-search/results/eyJyZXN1bHRfcGFnZSI6IlwvdmlzaXRpbmdcL2FkdmFuY2VkLXNlYXJjaFwvcmVzdWx0cyIsImRpc3RhbmNlOnJhZGl1cyI6IjEwIiwic2VhcmNoOmNmX2V2ZW50X2NvdW50eSI6IldhcndpY2tzaGlyZSIsInNlYXJjaDpjZl9ldmVudF9vcGVuaW5nX3RpbWVzIjoiVGh1cnNkYXkxfEZyaWRheTF8U2F0dXJkYXkxfFN1bmRheTF8VGh1cnNkYXkyfEZyaWRheTJ8U2F0dXJkYXkyfFN1bmRheTIifQ

Coventry: https://www.heritageopendays.org.uk/visiting/advanced-search/results/eyJyZXN1bHRfcGFnZSI6IlwvdmlzaXRpbmdcL2FkdmFuY2VkLXNlYXJjaFwvcmVzdWx0cyIsImRpc3RhbmNlOnJhZGl1cyI6IjEwIiwic2VhcmNoOmNmX2V2ZW50X3Rvd24iOiJDb3ZlbnRyeSIsInNlYXJjaDpjZl9ldmVudF9vcGVuaW5nX3RpbWVzIjoiVGh1cnNkYXkxfEZyaWRheTF8U2F0dXJkYXkxfFN1bmRheTF8VGh1cnNkYXkyfEZyaWRheTJ8U2F0dXJkYXkyfFN1bmRheTIifQ

I used to regularly visit many of these places when my daughter was younger. Sadly, these days, her idea of a day out with dad rarely involves old buildings. - But she is pushing 30!