Took the kids to the Melbourne Museum yesterday and there is currently a WW1 exhibition on. Cost me a small fortune to take the family through, but there is the Oberursel rotary engine from the Baron's ill-fated last flight on display. To me well worth the expense of dragging the family along to see. Here it is.
Not a big display of WW1 aviation artefacts, but still very interesting. Worth a look if you are interested in this period of aviation.