Eastern Serbia: gorges, caves, Roman ruins, and wide-open roads

Eastern Serbia extends from the Danube's Iron Gates — the gorge known as Đerdap — eastward through the Timok hills and the Kučaj Mountains to the Negotin plain near the Bulgarian and Romanian borders. Where the Danube leaves Serbia, a different chapter of the country begins: one where the stories of Roman emperors, Hajduk outlaws, centuries-old wine cellars, and underground cave systems overlap.

The main anchoring town is Zaječar, with around 60,000 residents and access to Felix Romuliana, Lazareva pećina, and Sokobanja. The Danube corridor between Golubac and Kladovo carries the greatest density of historical sites, including Lepenski Vir — one of Europe's oldest permanent settlements, dating to roughly 7000 BC — and the imperial palace complex of Felix Romuliana near Gamzigrad, declared a UNESCO World Heritage Site in 2007. Emperor Galerius built this palatial retreat around AD 298 close to his mother's birthplace, and the site preserves mosaic floors, temple remains, and mausoleum structures.

The Kučaj Mountains contain one of Serbia's largest cave systems. Sokobanja to the north offers a thermal spa that is particularly notable for its Ottoman-era hamam, one of the few intact Turkish bath structures surviving in Serbia. In the far southeast, the Rajac wine-cellar village — roughly 200 residents, around 100 surviving stone cellar buildings built half into the hillside to maintain year-round temperatures — offers one of the most unusual vernacular landscapes in the country.

Eastern Serbia has a character shaped by remoteness and layered history. The Hajduks — outlaws who resisted Ottoman rule — used the gorges and caves of this region as refuge. Few outsiders explored the area systematically, which is part of why it retains something genuinely difficult to find in better-known parts of Serbia: the sense that discovery still means something here.

Negotin illustrates the region's depth. A Turkish census of 1530 recorded only 55 houses on the site. Later it became the cultural center of the Timok area, associated with the national poet Vuk Karadžić (who taught here), the military commander Hajduk Veljko Petrović, and the composer Stevan Stojanović Mokranjac, who appears on Serbia's 20-dinar note. The town's name itself is traced by local tradition to two wealthy men who each built a settlement and argued about which was better — nego ti meaning roughly 'rather you' in Serbian.

Bor, the mining city, presents a different face: once a prosperous industrial center, today almost a living open-air museum of industrial rise and decline. The copper deposits here drew Roman-era miners and still define the economy, though the town's cultural institutions — library, museum, amphitheater — are in various states of repair. The surrounding nature, by contrast, remains in good condition.

Eastern Serbia is not Serbia's primary spa belt, but it offers workable options for combining sightseeing with a thermal rest day. Sokobanja is the most developed: a small town north of Zaječar with mineral springs and, most notably, an original Ottoman hamam that predates most other spa infrastructure in the region. The combination of a medieval fortress and a surviving Turkish bath makes Sokobanja unlike other Serbian spa towns.

Brestovačka Banja lies roughly 20 km from Bor in a quiet river valley. It is a quieter and smaller option with sulphurous thermal pools, more suitable as a half-day add-on than a destination in itself. According to local tradition, it may have been the thermal springs of what is now called Gamzigradska Banja that first drew Emperor Galerius to build his palace in this corner of the empire.

Eastern Serbia's food is direct and regional. River fish from the Danube — carp, catfish, perch — appears in most riverside kafanas between Golubac and Kladovo, often prepared as a grilled whole fish or as a paprika-based fish stew. Inland, grilled pork and lamb cuts dominate. The Etno Restoran Konak in Negotin is the book's example of a family restaurant that serves whatever is fresh and seasonal — the menu reflects what has been prepared that day rather than a fixed list.

The wine story in this corner of Serbia is old and specific. The Negotin area exported wine to France during the 19th-century phylloxera epidemic because local vines on the sandy Danube banks were beyond the reach of the louse. Today the Rajac village area produces Prokupac, Bagrina, Pinot noir, and Sémillon. The wine estate Raj (Vinarija Raj) near the Rajac train station offers a newer but well-regarded addition to the traditional cellar culture of the village.

A car is the most practical option for Eastern Serbia. The Danube road (M-25 / E771) runs the length of the Đerdap corridor in reasonable condition. Side roads to cave sites, wine villages, and mountain valleys vary — some are unpaved in the final stretch. Allow extra time and check local conditions before driving to Lazareva pećina or the Vratna rock gates.

Bus services connect Belgrade with Zaječar, Bor, and Negotin regularly. A rail line links Negotin with Rajac (40 minutes) and Zaječar (90 minutes). Petrol stations thin out between the smaller towns; plan refueling at each major stop. For shorter hops within the region, local taxis are generally easy to arrange from the main towns.

Spring and autumn are the most practical seasons for Eastern Serbia. Temperatures are comfortable for long driving days, the Danube runs at a good level for viewing the gorge, and the cave sites are open without summer crowd pressure. Summer brings significant heat along the Danube valley — midday sightseeing can be uncomfortable — though the gorge and cave interiors stay cooler. The Sveti Trifun celebration in Rajac on 14 February marks the start of the wine year with food, wine, and music in the cellar lanes. The Mokranjčevi dani music festival in Negotin takes place in mid-September. Winter reduces access to some mountain sites; Sokobanja and Brestovačka Banja remain open for thermal visitors year-round.