Our hotel near Prague was by two smaller, older airport that operates now as a general aviation, military, and museum airports. The Praha-Kbely airport has a truly great aviation museum, the Letecké muzeum Kbely. (Nice, Prague. I wish Helsinki was more clever about retaining historic airports...)
There's A lot of Soviet era aircraft, but also older airplanes from the beginning of the 1900s century, newer ones, some decommissioned NATO airplanes, Swedish Draken and Viggen... and Sojuz-28 capsule! We liked that one in particular!
Much recommended! The museum's website is here. Also, admission is free!