First Trip to Crete: Must-Visit Places and Unmissable Experiences?

Hi everyone, I’m planning my first trip to Crete the end of August and I could use some advice from those who know the island well. What are the must-visit places and activities that I shouldn’t miss? I want to make the most of my time there and experience the best that Crete has to offer. Any recommendations for historical sites, beautiful beaches, local cuisine, and unique cultural experiences would be greatly appreciated! Btw I will be staying in Rethymno. Thanks in advance!