Transfăgărăşan (trans (over, across) + Făgăraş) or DN7C is the most dramatic and second-highest paved road in Romania. Built as a strategic military route, the 90 km of twists and turns run north to south across the tallest sections of the Southern Carpathians, between the highest peak in the country, Moldoveanu, and the second highest, Negoiu. The road connects the historic regions of Transylvania and Wallachia, and the cities of Sibiu and Piteşti.
The road was constructed between 1970 and 1974, during the rule of Nicolae Ceauşescu. It came as a response to the 1968 invasion of Czechoslovakia by the Soviet Union. Ceauşescu wanted to ensure quick military access across the mountains in the event the Soviets attempted a similar move into Romania. Consequently, the road was built mainly with military forces, at a high cost both financially and from a human standpoint—roughly 6 million kilograms of dynamite were used on the northern face, and the official records mention that about 40 soldiers lost their lives in building accidents.
It has more tunnels (a total of 5)and viaducts than any other road in Romania. Near the highest point, at Bâlea Lake, the road passes through the longest road tunnel in Romania which is not lighted (884 m).
The northern section is used as a part of yearly cyclist competitions Tour of Romania (Romanian: Turul României). The difficulty of this section is considered to be very similar to Hors Categorie climbs (literally beyond categorization) in the Tour de France.