An artist from England broke a Guinness World Record when he created a sculpture of a Lego brick roughly the same size as a human white blood cell.

The new Guinness World Record holder for the smallest hand-made sculpture is so miniscule that you can’t even see it with the naked eye. Completed late last year and confirmed this week in a Guinness press announcement,

It was no small feat. British “micro artist” David Lindon set a Guinness World Record by creating a microscopic Lego block that is the same size as a human white blood cell — four times smaller than the previous record.