Some Old Airplanes to See From BulgariaIf by any chances you are going to Bulgaria soon you can visit the Sarafovo Airport in Burgas and see some nice old abandoned airplanes. They aren't ultralight but are still quite interesting.
See some pictures here.
It's not a museum, so you don't have to ask anyone. Go there, enjoy the airplanes while they are still there. You can even take pictures.
It's both interesting and a little bit sad.