Verify your card and the 10% discount voucher code for Secret Vienna will be displayed. You can redeem the voucher when purchasing your ticket on Additionally you must show your ISIC, ITIC or IYTC at the start of the tour.

ISIC serial number
E-mail address
Your e-mail address is used only for delivery of your voucher and will not be used for any other purpose unless permission is given.
Your name (as stated on your card)
  I agree for ISIC Association to use my e-mail address for the purpose of market research.
  I agree with the Privacy Policy