Sofia metro
Metropolitan Jsc.
The first plans for Sofia metro are drawn
The first section of M1 is inaugurated from Slivnitsa to K. Velichkov
M1 crosses the city from Slivnitsa to Mladost I
M2 is inaugurated with 11 stations from Obelya to James Bourchier
M3 is inaugurated with 8 stations from Krasno selo to Hadzhi Dimitar
What to do in the event of an emergency in the metro and metro stations