At least one family has struck lucky at a beach in Kent after discovering a gold bar worth £10,000.
ITV News correspondent Richard Pallot reports:
Hundreds of gold-diggers have travelled to Folkestone's Outer Harbour Beach over the past two days after German artist Michael Sailstorfer revealed he had hid thirty 24-carat gold pieces in the sand.
Visitors were given extra motivation when they were told they could keep whatever they find.
One family found a gold bar late on Friday evening, organisers said.
Three other bars have reportedly been found, but others were not so lucky.
"We found two shells and a piece of wood," one youngster said.
One of the organisers said she was delighted by the response to Mr Sailstorfer's challenge.
""There's been a real sense of community. Everyone's really happy, and just really enjoying the beach - whether they are finding things or not," Rachel Kinchin, communications manager for Situations UK, said.