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
Tottenham Hotspur defender Cameron Carter-Vickers has joined Ipswich Town on loan until the end of the season.
The home of British horse racing has been hit by a shortage of stable staff
Cold at first with a risk of frost and a few icy stretches. It will be bright and breezy with sunny spells and scattered showers.