At the Kovela Tractor and Agricultural Machinery Museum in Nummi, visitors can learn about the mechanization of farm work. The collection is on display on two floors of an old barn and in a separate rear hall. The museum houses approximately 120 tractors, most of which date from 1920 to 1955, as well as farm engines, threshing machines, and horse-drawn vehicles, among other items. The collection originated from the Karhu family’s collecting efforts in the 1970s. The Tractor and Agricultural Machinery Museum is open daily. The manor house museum, located in the main building on the same farm, is a separate attraction; visits are by advance appointment for groups only.