There's a huge grassy bit for lots of fun and a big wooden shelter bit to sit under and be sociable.
The makers hope the re-design will mean people work more as a team, unlike last year's lot. The team weekly task will come back which will help them to work together too.
And they say there will be a few surprises.
But they wouldn't say anything about rumours of secret "attics" with stand-by contestants in them!
Big Brother 4 starts at the end of May, lasts for 64 days and will be presented - as ever - by Davina McCall.