Palikkatakomo is a Finnish LEGO hobbyist forum
Palikkatakomo (whom I’m unaffiliated with) is a Finnish LEGO hobbyist forum and the name of their LEGO Users’ Group. According to this blog post (which also has photos) some thirty people participated in the construction. It quotes an unnamed Lego representative saying this is the biggest uniform Lego city in the world (currently? ever? idk).