Arrival, meet and greet at the airport. Discover Sofia, the capital of Bulgaria. First, we will visit the big national history museum. 1.5-hours guided tour there. Then, we continue to the city center for 2-hours guided city tour, which includes all of the major sites: Saint Alexander Nevsky Cathedral, Saint Sofia Basilica, the Parliament, the old Royal Residence, the national Theater, the Largo complex, the Roman remains, the old baths, the court. Depending on the time of the arrival flight, free time for lunch will be planed. After that, hotel accommodation, free time and overnight stay. Note: if your flight arrives in the evening, this tour will be conducted on day 5.