Possibly a military research facility or museum. There is also the rotar blades of a helicopter on the south of the building.
North Korean Fighters Under Awning Far From Airstrip
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© Bing Maps
By pdunn @ 2005-10-02 11:27:59
Check these out:
ttp://maps.google.com/maps?ll=39.875714,125.503827&spn=0.003809,0.005606&t=k&hl=en
http://maps.google.com/maps?ll=39.860003,125.530982&spn=0.003591,0.005606&t=k&hl=en
I agree it is strange to find airplanes so far from runways though. even here the plane are usually somewhat close to airports.