Most people to contribute to a painted wooden block mosaic

According to Official Guinness Records,

4000 people to complete 4200 pieces of wooden mosaic portrait

For a complete list of 2016 records, please visit 2016 Guinness Records in Australia.

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Other Australia records that might interest you:

• Longest line of pies
• Most tricks performed by a cat in one minute
• Fastest time to complete a marathon on each continent (female)
• First female team to row across the Pacific
• First team to row across the Pacific
• Tallest inflatable slide
• Largest collection of videogames
• Most consecutive days to run a marathon distance (male)