Kazimieras Bočiulis Windmill, built in the late 19th century to early 20th century, is a significant historical landmark in the Kupiškis region. The first owner of the windmill was Kazimieras Bočiulis. After his death, his family moved to America, and his son Petras went to work elsewhere, resulting in the mill being rented out to Domas Žiukas from Kupiškis. Some sources suggest that the mill was rented because Petras was too young to manage it. However, in the memory of the people of Kupiškis, it remains known as Petras Bočiulis Windmill.
This windmill ground wheat, rye, oats, barley, and pea flour, but did not produce grits. According to contemporaries, the mill could only operate
on windy days, generating little profit, especially with seven other mills in the town. It is remembered that the mill operated infrequently due to the old owner's inability to manage it properly and the mechanisms being worn out.
In 1941, milling operations ceased, and the Bočiulis family began using the mill as a barn and kitchen. During the Soviet era, the mill was taken over by the Kupiškis District Cooperative, which used it as a storage for furs and animal hides. In 1990, the windmill underwent partial restoration. Currently, the windmill is privately owned. In 1992, it was included in the Register of Cultural Values and in 2005 was recognized as a protected state heritage site.