Ever since 03/26/2022.
Verified that these artworks are still visible.
Across 4 countries: France, Netherlands and Switzerland and more.

spotted 10 artworks in 's-Hertogenbosch
spotted 19 artworks in Rotterdam
spotted 31 artworks in Rotterdam
spotted 4 artworks in Gouda
spotted 14 artworks in Le Locle
spotted 2 artworks in Pisa
spotted 2 artworks in Bergamo
spotted 7 artworks in Caorle