Take a private transfer to Sofia this morning. Bulgaria's capital is a cosmopolitan city with wide tree-lined boulevards and pleasant parks. Get oriented with your leader, taking the city’s metro and trams, then have the rest of the day to wander. You might want to sate your cultural curiosity at the National History Museum, discover artefacts from the many empires of old that have occupied the city at the National Archaeological Museum, or get cultural at the National Art Gallery. In the afternoon, board a local train for Plovdiv. Situated on the Maritsa River, Plovdiv was once the meeting point of two ancient transportation routes. In the evening, make sure you indulge in the local cuisine, famed for its grilled meats and vegetables on skewers. (B)