I don't know what it is - the translation wasn't much help - but it sure looks cool.
Another of Marta Zientek and Wojciech's creations using found and recycled materials.
Add an insect house to your garden to provide nesting sites for solitary bees and insects. Make your own but ensure it has a waterproof roof, or invest in a bespoke bee hotel such as the Big Insect Biome, £59.99 (wildlifeworld.co.uk).
Bee Hotel for solitary pollinator bees by HudsonValleyCreators