• If you arrive at Terminal 2 of Sofia airport, take the metro to Serdika station and then change to Lion's Bridge staion. Then walk 5 minutes down Slivnitsa Boulevard antil you cross Hristo Botev Boulevard. Turn right and you will see the green building on your left side in 2 minutes.
• If you arrive at Terminal 1, use the free shuttle bus to Terminal 2 and follow the instructions.
• In case you arrive at Central Bus or Train stations, just walk down Hristo Botev Boulevard to number 137.