After Belgrade and Novi Sad, Niš anchors southeastern Serbia as the country's third largest city with 183,164 residents within city limits according to the 2022 census. Located 237 kilometers southeast of Belgrade along the Nišava River valley, Niš functions as the administrative center of the Nišava District and serves as the primary economic hub for southern Serbia. The city occupies a strategic position at the crossroads of the European route E75 running from Scandinavia to Greece and E80 connecting Portugal to Turkey, making it a natural transit point between the Balkans and Asia Minor. This geographic advantage has shaped Niš continuously since Roman Emperor Constantine I was born here in 272 CE, establishing the settlement as a military and administrative center under the name Naissus.
The Niš Constantine the Great Airport, located 4 kilometers northwest of the city center, handles approximately 350,000 passengers annually with year-round Ryanair service to Basel, Malta, and seasonal connections to German cities. Bus travel from Belgrade to Niš takes 3 hours on direct Lasta and Niš Ekspres coaches departing hourly from Belgrade's main bus station, with tickets costing 1,100-1,400 dinars one-way. Serbian Railways operates three daily trains on the Belgrade-Niš route, requiring approximately 4.5 hours for the 250-kilometer journey due to aging track infrastructure, though ongoing modernization funded by Russian and Chinese investment aims to reduce travel time to 2.5 hours by 2025. Driving from Belgrade via the E75 motorway takes 2.5 hours under normal conditions, with tolls totaling 620 dinars for passenger vehicles.
Niš Fortress dominates the right bank of the Nišava River, its current structure dating to the early 18th century when Ottoman forces rebuilt defenses between 1719 and 1723 following the Treaty of Passarowitz. The fortress walls form an irregular polygon encompassing 22 hectares, with eight bastions and four gates preserved in varying states. Archaeological excavations conducted between 1956 and 2018 have revealed foundations of Roman military structures beneath Ottoman fortifications, including sections of wall from the 4th-century Naissus settlement. The main gate faces the city center, flanked by octagonal towers rising 8 meters above the ramparts. Within the fortress grounds, Bali-Bey Mosque stands as the only surviving Ottoman religious structure in Niš, constructed in 1521 though no longer functioning as an active mosque. The Turkish bath complex adjacent to the mosque operated until 1877 and now houses archaeological exhibits. The fortress grounds function as a public park where locals gather in warm months, with the annual Nišville Jazz Festival occupying the space each August since 1995, attracting approximately 100,000 attendees over four nights.
Mediana archaeological site lies 5 kilometers east of central Niš along the Belgrade road, preserving the suburban estate of Roman Emperor Constantine I from the 4th century CE. Excavations beginning in 1933 under archaeologist Miloje Vasić uncovered villa foundations, thermae with hypocaust heating systems, a granary complex, and water tower remains across a 40-hectare area. The peristyle villa contains floor mosaics depicting marine scenes and geometric patterns, with tesserae ranging from 5 to 15 millimeters. One mosaic measuring 10 by 6 meters shows dolphins, fish, and sea creatures in polychrome stone, comparable in technique to contemporary work at Piazza Armerina in Sicily. The thermae complex spans 1,600 square meters with distinct frigidarium, tepidarium, and caldarium sections identifiable through foundation remains and drainage systems. A protective pavilion constructed in 1967 covers the most significant mosaics, though weathering and insufficient conservation funding have damaged exposed sections. The site opens daily from 9:00 to 19:00 April through October and 10:00 to 16:00 November through March, with admission at 200 dinars for adults.
Skull Tower stands 2 kilometers southeast of the city center on the road toward Sofia, a 4.5-meter-high stone structure embedded with human skulls from Serbian insurgents killed during the 1809 Battle of Čegar. Following the battle on May 31, 1809, Ottoman commander Hurshid Pasha ordered the construction of the tower incorporating skulls of fallen Serbian rebels as a warning against insurrection. The original structure contained 952 skulls arranged in 14 rows, though only 58 skulls remain today, the others removed by relatives or lost to weathering before the protective chapel was built in 1892. The tower measures 3 meters at its base and tapers to 2.4 meters at the top, constructed from stone blocks mortared together with skulls pressed into recesses on all four faces. French poet Alphonse de Lamartine visited in 1833 and described the monument in his "Voyage en Orient," bringing international attention to the structure. The protective chapel built by Serbia after independence features a wooden door and small windows allowing natural light while preventing direct weathering. Visiting hours match those of Mediana, with the same admission fee.
The Niš concentration camp operated from 1941 to 1944 as Crveni Krst, the sole German-administered concentration camp in Serbia during World War II. Located 3 kilometers southeast of the city center, the camp held primarily Serbian civilians, Jews, and Roma, with estimates placing total internees at approximately 30,000 over three years. The camp occupied former Yugoslav Army barracks consisting of five pavilions and administrative buildings surrounded by barbed wire fencing and guard towers. On February 12, 1942, German forces executed approximately 12,000 internees in retaliation for partisan attacks in the region, shooting victims at nearby Bubanj Memorial Park. The camp museum opened in 1967 within preserved barracks buildings, displaying photographs, personal effects, and documentation of camp operations. One pavilion shows reconstructed sleeping quarters with wooden bunks where internees slept in shifts due to overcrowding. Administrative records preserved in the museum indicate daily food rations consisted of 200 grams of bread and thin soup. On February 12, 1944, 105 internees escaped through a tunnel dug beneath the wire fence, an event commemorated annually at the site. Admission costs 200 dinars with guided tours in Serbian and English available by advance request.
Bubanj Memorial Park occupies a hillside 4 kilometers southeast of Niš where German occupation forces executed an estimated 10,000 Serbian civilians, partisans, Jews, and Roma between February 1942 and October 1944. The memorial complex designed by sculptor Ivan Sabolić was dedicated on October 14, 1963, featuring three stylized concrete fists rising 10.5 meters from the execution grounds. Each fist weighs approximately 4 tons and points skyward at different angles, representing worker, peasant, and intellectual resistance. The amphitheater descending from the memorial holds 10,000 people and serves as venue for the annual February 12 commemoration ceremony attended by several thousand. Excavations in 1954 uncovered mass graves containing remains of executed civilians, now reinterred in individual plots marked by simple stone markers. Interpretive panels installed in 2012 provide historical context in Serbian, English, and German. The site remains open continuously with no admission charge.
Kazandžijsko sokače, a cobblestone lane measuring 200 meters in the old town quarter, preserves Ottoman-era architecture and functions as a crafts market. The name translates to "Tinkers' Alley" after coppersmiths who worked here during the 18th and 19th centuries when Niš served as a regional Ottoman administrative center. Buildings along the lane date primarily from the 1860s through 1880s, featuring stone foundations with timber-framed upper stories and overhanging eaves. Approximately 30 workshops continue operating, producing copperware using traditional hammering techniques though tourist souvenirs now dominate over utilitarian vessels. Craftsmen work at anvils visible from the lane, demonstrating the hand-raising process of forming copper sheets into pots, plates, and Turkish coffee sets. Restaurants occupy converted workshops serving traditional Serbian dishes, with outdoor seating extending into the narrow lane during summer months. The Niš municipality designated the area a protected cultural zone in 1967, restricting modern construction and requiring façade maintenance consistent with late-Ottoman style.