In reply to gilly:
If you mean up to say VS or UIAA V then
Meteora - bolted up to 8 pitches; amazing scenery; may be closed but lovely monasteries and hermitages
Dolomites - trad; up to around 20 pitches; go via venice?
Dent d'Orlu (Pyrennees) - bolted; up to 30 pitches; some nice provincial towns
Costa Blanca - bolted or trad; up to 10 pitches; a bit low on culture
Picos d'Europa - as Costa Blanca, with less concrete but more rain
Tuolumne meadows - trad; up to around 10 pitches; 'Murica though
Slovenia - as Dollies but fewer people
Morocco - trad mostly; sun guaranteed
Mexico - as poster above
Norway - trad; rain guaranteed