If you want to have a professional organized tour in Sofia, we recommend Sofia Free Tour. The free English-language walking tour of Bulgaria’s capital expects its guests every day at 10 AM (10:00), 11 AM (11:00) and 6 PM (18:00) at the corner of the Palace of Justice (Sudebna Palata). The tour lasts approximately 2 hours. The sightseeing tours of Sofia are organized by guides from the non-profit organization 365 Association. Every tour is both fun and educational, the perfect introduction to the city and its thousands of years of history.
No reservation required, but for bigger groups (10+), it’s better to get in touch with them and they can also arrange a tailor-made private tour for you.