Decent amount of aircraft spanning from WW1 to 1980s. If you love gliders and trainer aircraft, this museum has the most I've seen! If you're interested in history of Czechoslovakian aviation, this is a must. If you think this is going to be comparable to the Museum of Flight in Seattle, very much not in the same league. Worth an easy trip from Prague, free entrance. Be aware the museum is split into two areas and street signage to the other part is lacking, just go by the map at the main entrance. Glad I went.