Riga, Latvia
Quite why the Latvian capital remains so under the radar is a mystery; the cobbled streets of the Vecrīga (old town) and the elegant art nouveau architecture make it one of the most beautiful cities in eastern Europe. Long summer evenings, with temperatures rarely topping 30C, form the backdrop for rooftop bars thrumming with live DJs, as well as alfresco concerts in leafy parks, while the beautiful sandy beaches of seaside Jūrmala are just a half-hour bus ride away.