sentences:  The museum archives contain everything that is known about the first successful glider pilot, essays, documents, including a photo archive, replica and models of all known gliders and aircraft of Lilienthal.Moreover, the brothers Otto and Gustav Lilienthal were very prolific inventors of steam engines, toys, as well as initiators of numerous social and cultural projects.The museum acquired a large collection of hang gliders and shows models of aircraft, from the time before the first successful flights, represent the early history of aviation and the prehistory of the aircraft.