unique places to stay in the UK (south)

I'm looking for somewhere fun and quirky to stay in the UK in July, preferably in Dorset, Devon, or Wales. So far I've come up with: a treehouse (sounds super cool, but sadly it's booked until 2014), a barge, and a yurt.

Does anyone have any unique and off-the-beaten-track suggestions of places like this? We're big campers, hikers, pub-goers, and very interested in nature and history and everything else amazing that the UK has to offer.

The odder, the better! 

Have you seen these websites? The list unusual places to stay and some of them are within your requested areas: http://www.visitbritain.com/en/Accommodation/Featured-accommodation/Quirky-accommodation.htm
http://www.windmillworld.com/mills/placestostay.htm
http://www.responsibletravel.com/accommodation/england/unusual

I'd only ever thought of camping or regular B&B's or hotels so you've piqued my interest, thanks!

Thanks for the links, Fruitgum. Never would have thought of windmills or lighthouses - and now I have a few inquiries in!

 

Glamping (glamorous camping) is a growing phenomenon that combines camping with the the luxury and amenities of a home or hotel.  It allows travelers to experience nature without the hassle.

There are Eco-Pods in Pembrokeshire, Wales - http://glampinghub.com/unitedkingdom/wales/pembrokeshire/secluded-eco-pods-wales

Also Tent Pods in Devon - http://www.whitehill-park.co.uk/accommodation/campingpods#

Thanks for the links, ricksgirl!