Oh, wonderful! I've also been to Antalya and it's well known as a Turkish resort city. If so, we've got something in common to talk about then, haha. In fact, the country of Turkey has plenty of historical sites, gastronomic delights, shopping hubs, and cultural attractions in other communities, not just Istanbul. No wonder international tourists would never get bored in revisiting this fantastic destination on several occasions.
As you mentioned, Göblekli Tepe is another popular archaeological site there as well. That would surely be an interesting place to explore. If there's one major spot that I've never been to yet, that would be the Cappadocia region where you get to experience a thrilling ride on a hot-air balloon plus discover impressive rock formations. Hope travel restrictions in the near future would not be that rigid. 😊