The windmill on Zielona’ lagoon in Kalety is an old wooden windmill, which is an attraction in itself. It stands on the island among the trees and creates a picturesque view. In the past, the windmill was made available to tourists, it was even possible to spend the night in it. A small bridge led to it. Today you can only get here by canoe, and the facility remains closed. However, there are plans to make the windmill available again for tourists after revitalization. A cable ferry is also planned, which will transport to the windmill.