Hello nadia1698
Thank you for your request.
What kind of subscription do you want to buy? Anyone can buy the SwissPass (the red card). This is the carrier medium for the various season tickets in Switzerland. If you are only here for tourism, the red card may not be worth it. You can find more information about the card here: sbb.ch/en/travelcards
The season tickets for our guests from abroad can be found here: sbb.ch/en/leisure-holidays
You are also welcome to contact our telephone support on 0848 44 66 88 (CHF 0.08/min).
Have a nice day. Kind regards, ZoeS