tuiuk With its terracotta rooftops, cobbled streets and seafront setting, Nessebar’s pretty old town is Bulgaria’s answer to Dubrovnik. You’ll enjoy a walking tour along the narrow streets of this UNESCO World Heritage Site, passing grand 18th-century houses and many of the medieval churches the town is famous for. The second part of your trip takes place onboard the Royal Helena, for an unforgettable cruise where you’ll toast the day with a glass of bubbly. You’ll then have time to explore Nessebar at your own pace.