NT Street View Map
Today Google have unveiled some stunning new Street View imagery of National Trust houses and castles in the UK. This Google Map mashup allows you to view the new Street View imagery.
To view the Street View for one of the National Trust properties just click on the property's name in the menu and then click on the blue Street View layer on the map. The Street View will appear under the map.
I was only able to put this map together so quickly because, by chance, last week Mapperz was kind enough to share with me a list of lat/longs for UK National Trust properties.
SV Mapplets have also produced a mapplet for Google Maps that shows all the National Trust properties with Street View. The Mapplet allows you to select any of the National Trust Properties and view the Street View directly within Google Maps.