Subject: Welsh Castles
Can't say which are on the tour bus list - but (afaik) never met a tour bus at any of the castles I've visited.

Caerphilly was nice because of the ruined tower which you can even climb on - I'm not telling you to do this! Caernarfon is well preserved and we had the chance for a tour (just for five or six persons).

Harlech Castle was very windy - and therefore quite impressive