Your vacation schedule should feature a walk through Pamukkale University. It's a well-known local institute with a vibrant campus.
If you love the word "free" as much as most do, you'll be glad to know this modern university is precisely that. Pamukkale University is located in Denizli. If you want to keep your sightseeing schedule full while you're around these parts, also drop by Sumer Park AVM, Gunaydin Sanat Galerisi and Laodicea Ruins.