Transfagarasan is a must, of course. Take care on the south side because the road is not so good as on the north side.
If you get to Bran you can also visit Brasov (my town, nice town
, it's a must to visit it), which is near, about 25-30km. Around this town there are a few roads that you can find at least interesting:
1.Brasov-Poiana Brasov-Rasnov (DN1E)
2.Brasov-Sacele-Cheia-Valenii de Munte (DN1A)
3.Brasov-Sacele-Tarlungeni-Teliu-Intorsura Buzaului-Siriu Lake (very nice)-Buzau (DN10)
If you enter the country at Nadlac you may visit Timisoara. Interesting city from my point of view. From there I recomand you a longer way to Transfagarasan, but a nicer and with less traffic roads. So:
Timisoara-Resita (on E70/DN59 and than left on DN58B)
Resita-Anina (on DN58)
After you leave Anina you go left on DN57B until you mit E70/DN6 (you will go through Bozovici, Prigor, Iablanita, small villages but with very interesting house's architecture).
When you meet E70/DN6 turn left on it until Caransebes.
Caransebes-Hateg (on DN68). Betwen this 2 cities you can stop at Sarmizegetusa to visit Ulpia Traiana Sarmizegetusa, an old Roman settlement. It will take you no more then 45minutes, its right near the main road (the ticket it-s less then 1 euro).
Hateg-Hunedoara (on DN687A). At Hunedoara you can visit Castelul Huniazilor.
Hunedoara-Deva (on DN687 and left on E68/E79/DN7). At Deva is to visit Deva Citadel (Cetatea Devei).
Deva-Orastie-Sebes (on E68/DN7)
At Sebes you can go left on E81/DN1 until Alba Iulia were Alba Iulia Citadel is to visit. From Alba Iulia can go further on the same E81/DN1 around 85km until Turda where I recommend to visit Salina Turda.
From here you can go back on E68/E81/DN1 until Sibiu ( it's a must to visit it, it was European Cultural Capital in 2007), and then on E68/DN1 until Transfagarasan to left on DN7C.
If you do not want to go back you can turn right on E60/DN15 until Targu Mures and then another right on E60/DN13 until Sighisoara (the oldest inhabited medieval citadel in Europe).
Sighisoara-Brasov (on E60/DN13).
Brasov-Transfagarasan-Campulung-Bran-Brasov (E68/DN1, then left on DN7C at Carta, left on DN73C to Campulung, a very bad road as far as I know, and then on E574/DN73 through Bran, back to Brasov).
I hope I gave you some interesting ideas.
For other destination ask for, and if we know will give you information.
PS: dubla postare pentru ca mi-a luat ceva timp sa editez si s-a scurs timpul in care puteam sa fac acest lucru.