Hey,
so I’m back from a tour through east europe and I want to share one of the best routes I ever encountered so far, the Transfăgărășan. This is a well known ~90km long road within the romanian carpathians built for military purposes with a very good asphalt quality. The road leads up to an altitude of 2042m taking over the Paltinu pass through a tunnel next to Lake Bâlea (where you can eat something) and takes course between the two highest mountains of the country (Moldoveanu annd Negoiu).
It is opened from June to October, but you should always inform yourself before you go there since the weather is not stable and other sports activities might be going on there. So far I was not able to find a reliable source of information for these things, ask the locals!
The road also leads over the Vidraru Dam which provides a nice scenery. If vampires are your thing then don’t forget to visit Poenari Citadel.
I was very lucky since I actually did not know the route before a friend told me when I was taking a hotel in Sibiu (Hermannstadt). So I threw away all my plans and went straight back into the mountains on the next morning!
Here is the kurviger route: https://kurv.gr/ZVCYK
Warning: This road looks kinda easy and is a lot of fun but please take care of yourself! It is sometimes very steep in those sharp curves which climb up the mountains. Also the roads might be very icy even when the weather is very warm and sunny due to micro climates. I actually had an accident by slipping on a 1cm strong ice layer with 70km/h and sliding down the street for 100m. It was plus 19 degree Celsius … don’t underestimate this route!