Ian Kershaw's Hitler biography Nemesis describes Hitler's hurriedly arranged summit with Mussolini in July 1943:
After landing at Treviso, Hitler and Mussolini travelled in the Duce's train to a station near Feltre and then still had an hour's drive in open-top cars in the sweltering heat until they reached the villa chosen for the meeting, which began at noon
The villa in question was Villa Gaggia, a pleasant enough villa in the foothills of the Dolomites. The North East of Italy makes sense geographically for a meeting between the two dictators. But why did Hitler, having flown as far as Treviso, then set off north again, by train, all the way back up to Feltre? Feltre is nearly half way back up to the Austrian border. Then, as Kershaw points out, the "Feltre meeting" didn't in fact take place in Feltre but an hour further on, by road.
I know the area. If a comfortable, secure and secluded villa were required, then the entire Treviso area is dotted with suitable residences. Villa Gaggia would seem a strange choice for a lightning visit. Does anyone know why they went there?
Incidentally, Kershaw notes this was Hitler's last visit to Italy. Does that make it his last foreign trip of any kind?