5 countries, 1 month. London. Paris. Switzerland. Italy. Barcelona. This is the exact itinerary I created for my first trip to Europe. Spend 1 week in London and Paris. Then, 5 days in Switzerland exploring Interlaken, Grindelwald, Lauterbrunnen, Lucerne, and Zurich. Another 2 weeks in Italy exploring Milan, Venice, Como, Tuscany, Amalfi Coast, and Rome. Finally end with 2 days in Barcelona before returning back home.