Made by: jizza
Portal estimate: 700
SEASONAL BANNER PLAYABLE UNTIL 2016/04/30
This is a journey through the 30 biggest municipality buildings of Vienna. Banner will be online until the end of May. You can do it by car or by walking combined with public transport. Passphrases are easy mutliple choice questions with answer A, B, C or D.
Here you can find the starting portals of each mission with the names of the closest station of Viennese publlic transport:
Here's a map of each mission: