Summer card 

The Zell am See Summer Card is your ticket to the most beautiful summer activities in Zell am See. 
You receive this card for your stays from mid-May to the end of October. 
With the card you get free entry or discounts in outdoor and indoor swimming pools, mountain railways, excursion boats and much more. 
The "card" works via a smartphone app to which you receive your access at check in.

you can book your fee-good holiday here