Artist Tomas Georgeson says he's left a cheque for £8,000 in Milton Keynes Gallery in the hope it will attract more visitors.
He has placed an advert in the local newspaper, The Milton Keynes Citizen, which reads: "A blank cheque for £8,000 has been hidden somewhere in the public spaces of Milton Keynes Gallery. It will be collected on 1 March 2013 if unclaimed."
Mr Georgeson said he wanted to get people through the door and change the mood of the place.
More top news
Showers dying out during this evening to leave a dry night with some long clear spells leading to a frost by morning. Lows -1 deg C
A protest march has been held in Huntingdon over plans to merge two local hospitals to save money.
A protest march has taken place in Huntingdon over plans which could see Hinchingbrooke Hospital merge with Peterborough City Hospital