In 2000 and 2001 the Road Administration of Savonia and Karelia and the municipalities along the highway 5 carried out an environmental art project LandscapeGallery the results of which are still visible also in Sonkajärvi.
The northern end of the "art road", the portion that goes through Sonkajärvi, features four works of art that play with light, landscape and the movement of the road and nature. The creative lightning of Takkobaari – a building alongside the road –, an old barn at a crossroads and the "Gate of Northern Lights" at an intersection of forest and field enliven the landscape alongside the road during dark.
Additionally, "Landscape Theatre", a white canvas stretched on a big aluminium frame, is located near Sukeva. In Landscape Theatre the leading role is played by the nature. The movements of the forest, wind and oncoming cars create different effects on the canvas. During the daylight, the blank canvas is like an anti-advertisement, a banner without a product, that comments on the advertising placards that are often insensitively placed along the roadsides.