Comment by AlanYx
People go to Teruel to see Albarracín (IMHO one of the most beautiful villages in Spain -- 100% worth the trip) and to make side trips to places like Valderrobres, Calaceite, Rubielos de Mora, Puertomingalvo, Cantavieja, and Mirambel. Tends to be more popular with non-Spanish tourists.
I agree, the inner mainland is beautiful, and so is Teruel, but that's kind of besides the point. Are you disagreeing with me that the tourist hotspots are the coasts + islands? In my experience, it's more of us who already live in Spain who visit various inner mainland areas, not so much tourists who are staying for a week or two.