When guests come to JW3's first fundraising dinner the week after next, they will take cocktails in the centre's succah.
The 200 square-metre installation will be one of the biggest succot around and has been described as an "architectural salvage" project made of reclaimed window frame and doors.
You can help decorate the Fun Palace Succah, which has been designed by architect David Rosenberg and artist Abigail Schama, on Sunday.