The Jara Cimrman Lighthouse is the youngest wooden lookout tower in the Jizera Mountains. In the building under the lookout tower there is the Jara Cimrman Museum, which was opened together with the Lighthouse. Access to the lookout tower is through the museum and there are 115 steps. Pine wood was used as the construction material and its original construction really resembles a lighthouse. The lookout tower provides a view of the Zeleznobrodsko and Semilsko regions in the background with Kozakov.