Here are quick links to the places I have visited per country:
England:
London
Bath
Stonehenge
Holland:
Amsterdam
France:
Paris and Versailles
Morlaix, Brittany
Caen, Normandy
Giverny
Loire Valley
Ireland:
Connemara
County Clare
Dublin
Spain:
Barcelona
Italy:
Milan and Lake Como
Florence and Pisa
Rome
Finland:
Helsinki
Suomenlinna Island
Iceland:
Reykjavik
Germany:
Munich
Scotland:
Edinburgh