March 14 is π day! To indicate this beautiful constant honor, we want to write out as many decimals of π as possible in Leiden! Hopefully we will break the world record with π deregistration on public real estate. With the help of many Flesschers, we managed to write over 6100 digits, ~2000 of which decorated park Landskroon for weeks. The rest was written with chalk, so didn't survive that long. Thanks for all the help! This activity is in collaboration with Leiden City of Science 2022 and information about this can be found on their website:

leiden2022