Danube Grandeur from Nurnberg

Nuremberg commands the imagination on two levels: as the glittering medieval city where Holy Roman Emperors held court, Albrecht Dürer was born, and craftsmen produced the first pocket watch — and as the site of the 20th century's darkest chapter, where Nazi rallies and subsequent war crimes trials left permanent marks on European history and conscience. The Kaiserburg castle crowning the hill above the perfectly preserved old town offers sweeping views of a cityscape that, despite wartime bombing, remains one of Germany's most beautiful. The Documentation Centre on the former Nazi Rally Grounds is essential, sobering history; the Christmas Market on the Hauptmarkt, held since 1628, is among Europe's finest. Visit May through October or December.

Regensburg, Bavaria's medieval masterpiece on the Danube, is one of Central Europe's most intact ancient cities — its Roman origins visible in the Porta Praetoria stone gate, its medieval prosperity celebrated in the soaring twin towers of St. Peter's Cathedral and the twelfth-century Stone Bridge. UNESCO World Heritage status acknowledges a skyline dotted with patrician towers, while the famous Historische Wurstküchl, Germany's oldest operating sausage kitchen, has been serving spit-grilled bratwurst since the 1140s. The surrounding hills produce excellent Bavarian whites. May through September offers the most convivial riverbank atmosphere.

Straubing is the Danube's most atmospheric Bavarian market town, where a Gothic city tower anchors one of Bavaria's longest market squares, Roman parade armor fills the Gäubodenmuseum, and the Asam brothers' Rococo church interior achieves delirious beauty. Visit August via Uniworld for Bavaria's second-largest folk festival — same beer and sausages as Oktoberfest, a fraction of the crowds.

Vilshofen an der Donau is a handsome Bavarian river town where three streams converge with the Danube, its medieval market charter and Gothic Stadtturm bearing witness to eight centuries of river trade prosperity — though its most joyful claim to fame is the boisterous Vilshofen Volksfest, Bavaria's second-largest folk festival after Oktoberfest, held each June. The pastel-painted baroque townhouses and arcaded courtyards of the compact old town make for an idyllic Danube-side stroll, while the surrounding farmland and rolling hills of Lower Bavaria offer cycling routes of pastoral serenity. Summer brings the festival season; spring and autumn lend the Danube Valley its most golden and peaceful character.

Grein, a picturesque port on the Danube River in Upper Austria, is known for its stunning architecture and rich history dating back to the 13th century. Must-do experiences include savoring local dishes like Greiner Knödel and visiting nearby attractions such as Dürnstein and Linz. The best season to visit is spring, when the landscape bursts into bloom and local festivities abound.

The port of Vienna is a cultural gem along the Danube River, famous for its stunning architecture, rich history, and vibrant culinary scene. Must-do experiences include sampling authentic Wiener Schnitzel and visiting the picturesque village of Dürnstein. The best season to visit is spring or early fall, when the city's gardens bloom and outdoor activities abound.

The port of Vienna is a cultural gem along the Danube River, famous for its stunning architecture, rich history, and vibrant culinary scene. Must-do experiences include sampling authentic Wiener Schnitzel and visiting the picturesque village of Dürnstein. The best season to visit is spring or early fall, when the city's gardens bloom and outdoor activities abound.

Bratislava, the only national capital bordering two sovereign states, sits sixty kilometres downstream from Vienna on the Danube — close enough for a day trip to the Austrian capital, yet possessed of its own entirely distinct character: a pastel-hued medieval old town of hidden courtyards, playful bronze statues, and hilltop castle views, where wine bars pour outstanding Slovak Riesling at prices that make the Viennese feel extravagant. The city's dramatic reinvention since 1989 has produced a dynamic, youthful culture that fills the old quarter's restaurants and concert halls with genuine warmth. Pair with Vienna or Budapest for the classic Danube river trilogy; all three cities are within two hours of each other.

Budapest, divided by the Danube into the hilly Buda of thermal baths and medieval castle lanes on one bank and the grand Pest of coffee-house culture and Art Nouveau splendor on the other, delivers the most theatrical first impression of any European capital — whether approached by river as the neo-Gothic Parliament materializes from the water or by night from the Citadella's sweep of illuminated panorama below. The city's celebrated thermal bath culture, rooted in Ottoman-era hammams and perfected in palatial Secession-era pools like the Széchenyi, is an experience entirely unlike anything else in Europe. Visit spring and autumn for comfortable temperatures; Vienna is two and a half hours west by train.

Batina is a small Croatian village on the Danube where three nations meet, renowned for its dramatic WWII liberation monument and proximity to the Kopacki Rit wetland nature park. Must-dos include visiting the hilltop battle monument, tasting paprika-rich fish paprikas stew and kulen sausage, and birdwatching for eagles and storks at Kopacki Rit. April through October offers the most pleasant weather and best wildlife viewing.

Novi Sad — the "Serbian Athens" — unfolds along the left bank of the Danube beneath the commanding walls of the Petrovaradin Fortress, a Habsburg military masterpiece whose underground tunnel labyrinth and hilltop clock tower (with hands reversed, to confuse enemy gunners) make for one of Europe's most unusual fortress visits. The city's elegant pedestrian street, the Zmaj Jovina, is lined with 19th-century Habsburg architecture that rewards a leisurely afternoon, while the Serbian cultural renaissance of the same era left behind museums, galleries, and coffee house traditions that endure today. In July, the EXIT music festival transforms the fortress into one of Europe's most storied outdoor stages. Visit May through September for the finest weather.

Belgrade, the 'White City' rebuilt at least forty times at the confluence of the Danube and Sava rivers, surprises every visitor with its raw, uncurated vitality — a capital that wears its turbulent history lightly while embracing the present with irresistible energy. The Kalemegdan Fortress, fortified for over two thousand years, offers the most dramatic river panorama on the entire Danube; below it, the Skadarlija cobblestone quarter fills nightly with kafana musicians and the aromas of Serbian rakija and roasted meats. Belgrade's nightlife — centered on the floating river clubs called splavovi — is genuinely legendary in Europe. Spring and early autumn offer the most comfortable conditions; the Iron Gate gorge is two hours downstream by river.