Slovenia - Ljubljana, Lake Bled, Lake Bohinj, Pokljuka Plateau, Triglav National Park, Piran, Kranjska Gora, all of the Julian Alps
Montenegro - Kotor Bay, Lustica peninsula, Orjen mountains, Lake Skadar, Biogradska Gora National Park, Sveti Stefan, Durmitor National Park, Budva
The Azores - whale watching, Sao Miguel, Mount Pico , Flores, Porto Pim Bay, Furnas, Andra do Heroismo etc.
Lithuania - Vilnius, Kaunas, Kernave, Klaipeda, beaches of Neringa, Trakai, Dzukija National Park, Druskininkai, Aukstaitija National Park
Estonia - Tallinn, Lahemaa National Park, Saaremaa Island, Tartu, Parnu, Soomaa National Park, Viljandi
Other ideas:
Lake Constance
Titisee
West coast of Ireland
Corsica