Urban sidewalks, sewer grates and dingy underpasses aren’t exactly the most likely places to find beautiful large-scale ornamental lace, but for artist NeSpoon Polska, that’s exactly where it belongs. The Polish artist creates both spray-painted street art and crocheted installations for interactive displays in all sorts of public spaces, from street lamps to abandoned houses.

Calling it ‘illegal city decor’ and ‘public jewelry,’ Polska wanders around Warsaw, swiftly painting parking meters, utility boxes, blank signs and other blank (and often ugly) urban surfaces. Some, like a giant mural taking up almost the entire side of a three-story building, are created with permission.

“Jewelry makes people look pretty, my public jewelry has the same goal, make public places look better. I would like people who discover, here and there, my small applications, to smile and just simply feel better,” says the artist.