The tour begins from the Alexander Nevski square at 10:30 every day and makes a full roundtrip of Sofia major destinations for about an hour. The duration can vary depending on the traffic. There is an audio overview in English throughout the whole tour.
The excursion is special due to the fact that it is the just one double decker bus in Sofia as well as in Bulgaria. The tour does not offer a meals and it does not operate as a hop on - hop off.