❄️ Vierumäki week 51 – winter holiday week amidst exercise, nature and private sauna, auctioning Vierumäen Loma-aika Oy's timeshare week 51 in one of Finland's most versatile exercise and holiday destinations. Vierumäki offers excellent facilities for year-round holidaying, but December week 51 is particularly atmospheric. As the year turns toward Christmas, Vierumäki's forests, outdoor routes and activity opportunities provide engagement for active holidaymakers.