The village Čičmany is known as the first folk architecture reserve in the world. Timbered houses here have very specific white ornaments of unclear origins. Some of the houses burned down in the 20th century, but were recreated by an influential architect Dušan Jurkovič.
The mysterious patterns caught the attention of idiosyncratic Neo-Avantgarde artist Július Koller, who worked with concepts of communication, universal symbolism and cosmo-humanistic culture. He simulated the Čičmany ornaments with a raster of question marks - his typical sign, which represents perpetual questioning.
More information and other artworks by the artist:
http://www.webumenia.sk/dielo/SVK:SNG.IM_116