Luminarium
This is Levity III. It's big, inflatable and very colourful - but otherwise fairly hard to describe (at least, probably not without getting all pretentious and arty).
It's been at Taurus Crafts in Lydney this week, and I popped along after work on Tuesday. Abstract bright colours = photo opportunity!
It was good. Sort of surreal and hypnotic, mostly quite calming and relaxing, and generally a bit odd. I think there was some music being piped in as well. An experience mostly unhindered by random children trying to bounce off the walls (despite having been told repeatedly that it is not a bouncy castle and not for jumping on...).
I'd happily have spent much longer just sitting and chilling out inside it, I think