You can get your FREE SplitCard at the Tourist Information Centres at Peristil or Riva for staying in Split:

SUMMER- from April to the end of October for 5 nights or more in any type of accommodation.

WINTER- from November to the end of March for 2 nights or more in any type of accommodation.

Check out all details here:

https://visitsplit.com/en/407/splitcard