It is dedicated to the history of Hungarian civil aviation, featuring almost all aircraft types used by the now-defunct national airline Malév.

Aeropark also has a flight simulator for visitors and a gift shop with plane models and various items of local flight memorabilia. 

Also of note according to Wikipedia, at Aeropark (AKA Aviation Cultural Center) most of the planes are accessible for visitors with wheelchairs.

More:
https://en.wikipedia.org/wiki/Aeropark