Sometime in the 19th century, the people of Zalipie, a tiny town northeast of Krakow, began painting flowers on local buildings. Originally, the paintings were meant to cover up the blackened walls left behind by soot from chimneys. But soon, they became a tradition.
Nowadays, the flowers cover everything from houses and barns to schools and churches, according to Travel & Leisure. At the end of the 1940s, Zalipie even started an annual flower-painting competition that takes place after the Feast of the Corpus Christi in June.