Lower Danube Traverse: Budapest to Belgrade

One of the most beautiful cities in the world, the wonders of Budapest rise up along both banks of the Danube in a truly impressive way. Along with Heroes' Square with its Tomb of the Unknown Soldier, awe-inspiring Hungarian Parliament Building, and the lavish Castle District with photogenic Fishermen's Bastion, the city is home to a captivating Jewish district and the second-largest synagogue in the world, an intricate underground cave system, and some of Europe's most famous thermal baths.

The port town of Mohács holds an interesting distinction. Battles here in 1526 and 1687 marked both the beginning and the end of Ottoman rule over Hungary. The town's origin dates back much earlier than that, though, as a Roman camp on the banks of the Danube. Today, one of Mohács most colorful traditions is the annual Busójárás Carnival, a lively display of music and dancing, cowbells and clappers, wooden pitchforks and puppets, food and drink, mask-carving and bonfires, all to chase winter away.

Born on the banks of the Danube when Serbian merchants formed a colony across from Petrovaradin Fortress in 1694, Novi Sad has evolved into a haven of Serbian culture, earning it the nickname of "Serbian Athens". Home to a soaring cathedral, Bishop's Palace, theater, Jewish Synagogue, and more, Serbia's second-largest city is also a bustling university town that was named Youth Capital of Europe in 2019 and a European Capital of Culture in 2022.

Situated along the famed Orient Express, where the Danube and Sava Rivers meet is Belgrade, one of the Danube's four riverside capitals. This is one of the world's oldest continuously inhabited cities—a place sieged, razed, and bombed by outsiders trying to control it. Today, the one-time capital of Yugoslavia is a thriving hub of government, finance, and urban renewal of many former communist-era districts. It is home to the Church of Saint Sava, one of the largest Orthodox churches; the famous Nikola Tesla Museum; Kalemegdan Fortress; and more.

A stronghold during Roman and Byzantine times, the eastern Serbian village of Golubac is surrounded by fascinating archaeological sites and imposing Golubac Fortress, gateway to Đerdap National Park and the Iron Gates gorges. Although the medieval fort had 10 defensive towers, it was attacked repeatedly over the centuries, changing hands between the Turks, Bulgarians, Hungarians, Serbs, and Austrians. Today, Golubac Fortress is part of Serbia's declared Immovable Cultural Heritage of Exceptional Importance, attracting thousands of visitors from around the world each year, while Golubac village is a popular destination for fishing, hiking, and sailing.

Located in the Veliki Kazan gorge, a section of the famed Iron Gates in Đerdap National Park, is Donji Milanovac, whose peaceful Serbian beauty is breathtaking. So much so, in fact, that filmmakers flock here, earning it the nickname of "Serbian Hollywood". Nearby, archaeologists have unearthed sculptures, weapons, and tools up to 9,000 years old that bear witness to an advanced Stone Age civilization—Lepenski Vir, one of the oldest settlements in Europe.

Sitting on the right bank of the Danube, the site of the eastern Serbian town of Kladovo has been inhabited since the Early Bronze Age. Today, Kladovo is popular for its beaches, wine trails, cuisine, and adventure activities, but the allure of the ancient past remains as strong as ever. This is where Roman Emperor Trajan built his legendary bridge across the Danube, and where the Romans also constructed Diana Fortress in the 1st century. Part of a vast defensive system along the empire’s border, Diana included a military camp, watchtowers, granaries, and even a civilian residential area.