this is one of the most spectacular routes if you live in istanbul / Turkey.
this route goes to national park of uludağ mountain.
i had been to europe's legendary routes such as transalpina, transfagarasan, amalfi coast and alp mountains stelvio..
and this uludağ mountain is worth driving.
on the mid-way, uludağ sarıalan, you can have barbeque on the top of the mountain and have a drink. and going to keles from the mountain way is amazing.