In reply to Gerry Narkowicz:
For long climbs:
Verdon (as early as possible)
Dolomites (summer, fall)
Bregalia (summer, fall)
Ailefrode (summer, fall)
Salbitchen (summer, fall)
Chamonix (early, if you wish to approach with skis, or summer, fall)
Rätikon (not sure, too hard stuff for me, most likely summer,fall)
Spring to mind.
For Central Europe that is.
Southern Scandinavia has some other option that are good in late spring/early summer... when some of the high stuff in the alps is still buried under snow.
If you have glacier skills and can ski. Ticking some of the high altitude classics around Cham with ski approach might be nice way to start the trip (eg. Gran Capusin and Voie Suisse or Voie Suisse to O Sole Mio, Gulliver if 7a at high altitude is not a problem).
Verdon is also good earlier in the season... so you don't bake in the sun... Quite often people go there during winter or early spring (like Feb).