Stay in the Heart of Sofia - Excellent location - show map Located in Sofia, within a 5-minute walk of Sofia center - Banya Bashi Mosque and 549 m of Council of Ministers Building, This property has a balcony and free private parking. The space a unique place with its ancient culture and excavations from Roman times. Serdika Fortress is an archeological site located in the center of Sofia. Serdica was transformed into a strong fortress by Emperor Mark Aurelius.