Al,
Vienna has 3 shops that I visited in 2014,
Atelier Harlequin
Bindergasse 6/1
1090 Wien
http://www.atelierharlequin.at/ (an old website, but has info)
They have loads of flats and also rounds and makers like K&C and John Jenkins
BOHM
? Schulerstraße (but very close to St Stephens, Mozart House, and right outside Hotel Domizil)
Maybe closed, but details of opening time are on the door, no website)
A gem of a shop, really small and old, reast to rummage around in the draws to find old retired figured, many priced pre-Euro !!!
In the next street is
Joseph Kober
Wollzeile 16, 1010 Wien, Austria
Also if you had loads of time, a full day at the
Museum of Military History or Heeresgeschichtliches Museum ..
Arsenal 1, 1030 Wien, Austria
https://www.hgm.at/en.html
All these places are easily found and the 2nd & 3rd are right in the centre of the city.
The other cities I have vested are Budapest, Prague and Nuremburg, but sadly didn't find shops selling figures, just the occasional one in an antique shop BUT they both have great toy museums with loads of old figures.
Prague - in the Prague Castle
http://www.prague.net/toy-museum
Nuremburg -
https://museums.nuernberg.de/toy-museum/
Budapest - at the castle there is a great Military Museum -
http://budacastlebudapest.com/military-museum/
Enjoy ….
John