The Olt is the river that cuts through the Carpathians, and wherever a river does that, an army will want to sit beside it. At Păușa, near Călimănești, the Romans built a small fort called Arutela to guard the road through the Olt valley, part of the defensive line that protected their province of Dacia after Trajan's conquest at the start of the second century. The fort's remains lie by the river, partly lost to floods and later works, and are included in the Frontiers of the Roman Empire listing for Dacia, added by UNESCO in 2024.
The Olt valley here is narrow and dramatic, with steep forested slopes rising on both sides and the river flowing fast and green below. The monastery of Cozia, founded in the fourteenth century by the Wallachian prince Mircea the Elder, who is buried there, stands right by the road, with its beautiful Byzantine-style church and frescoes. The spa towns of Călimănești and Căciulata have long attracted visitors to their mineral waters.
The main road through the Olt valley is one of the key routes between Transylvania and Wallachia, and it is busy, with heavy truck traffic, frequent overtaking and narrow sections where the road squeezes between river and rock. Ride with care and patience, and avoid peak times if you can. The reward lies beyond: the Transfăgărășan, one of the most famous mountain roads in Europe, starts not far to the east, and the Transalpina is within reach to the west, both seasonal high roads closed for much of the year by snow.
Călimănești, about five kilometres away, has fuel, shops, restaurants and plenty of accommodation. Râmnicu Vâlcea, to the south, is a bigger town with every service. Local food is hearty: sarmale, cabbage rolls stuffed with meat and rice, mici, grilled sausages, and polenta with cheese and sour cream. The Horezu monastery and its famous pottery are an easy detour to the west.
Come in late spring or early autumn, when the forests are fresh or golden and the high roads open. Summer brings heat and crowds, winter snow and ice. Little of Arutela is left to see, so treat it as a pause by the river, a breath before the Cozia monastery and whichever mountain road you have chosen for the afternoon.