3. London

For: The European adventure

What to Expect: For first-time solo travellers, London is a great spot to get acquainted with the Euro travel experience. Of course, it’s English-speaking — just with a better-sounding accent. And with trains, planes and boats pouring in from surrounding U.K. and European countries, you’ll be meeting like-minded travellers from all over (and possibly new travel companions, should you be carrying on with your Europe trip). But you’ll never tire of things to do and landmark places to see (Big Ben, Buckingham Palace, Portobello Road Market on a Sunday morning) if London is your sole stop. And since it’s a world-class global city, you’ll never be alone doing them.