Took advantage of the excellent Heritage Open Days scheme to get free entry to Tyntesfield, S of Bristol, at the weekend and wander round with the GPS getting some tracks. Got an initial version uploaded and edited, have asked the National Trust about working with them to get some more detail in. Also need to check out the mailing lists/wiki to get recommended tagging for NT properties. It's a fabulous house anyway, despite currently being covered in scaffolding, and the NT deserve credit for keeping it open while the work is going on and involving the public in the whole project.