Save your money !! Seriously, don't bother. By all means visit Mona if you enjoy great architecture because the building itself is the centrepiece. As for the art on exhibition I'm afraid you'll be disappointed, perhaps not least by the military style enforcement of the "do not touch" brigade stationed around every corner or just the general demeanour of staff.., it doesn't hurt to smile guys, it's just art - get over it. The nearby winery / café would have been a better two hours spent.