WelcomeCard by Carino
If you plan to stay a day or longer in Cologne I hardly recommend to buy a K?ln - WelcomeCard, which is available for 24, 48 or 72 hours. 24h: Single 9 EUR / Group 18 EUR
48h: Single 14 EUR / Group 28 EUR
72h: Single 19 EUR / Group 38 EUR
Available at the Airport, K?ln Tourismus and many hotels.Included are all public transportation, Airport-Transfer with Bus 170, Discount in Museums and Sights, Free K?lsch at some restaurants and much more.
Check it out. It's worth!