Last Updated: May 2026
Passau is nestled in southeastern Bavaria at one of Europe’s most dramatic geographic intersections. Known as the “City of Three Rivers” (Dreflüssestadt), Passau sits at the confluence of the Danube, Inn, and Ilz rivers near the Austrian border — a location that has shaped its history as a powerful trade hub, an episcopal capital, and one of the most distinctively beautiful Baroque cities in Germany. Sandy and I sailed aboard the River Duchess from Regensburg as the Danube grew wider and the countryside more dramatic, arriving at Passau with its pastel-colored buildings tumbling down to the water’s edge and the twin towers of St. Stephen’s Cathedral rising above everything. Even from the ship, it was immediately clear this was a special place.
Passau’s Baroque Old Town and the City of Three Rivers
Passau’s history stretches back to a Celtic settlement named Bojodurum, later evolving into a Roman camp known as Castra Batava. It served as the northernmost border between Germanic tribes and the Romans until 480 AD. The city was made an episcopal site in 739, and its bishops became princes of the Holy Roman Empire in 1217, ruling Passau until 1803. Despite facing significant damage from fires in 1662 and 1680, subsequent rebuilding efforts gave the city its distinctive and cohesive Baroque character — the elegant pastel facades, the green-domed churches, and the graceful archways that make every lane feel like a stage set.
Today, Passau serves as the economic, cultural, and communication center of southeastern Bavaria. Industries include brewing, bell founding, and the manufacture of clothing, bicycles, organs, and electrical engineering products — the last of which feels particularly apt for the city that is home to the world’s largest cathedral organ. Tourism is also a major pillar of the local economy, and it is easy to see why: Passau is compact, walkable, strikingly beautiful, and overflowing with history at every turn.
Artists Alley
The flood-prone Höllgasse area is home to Passau’s Artists Alley — a charming concentration of art studios tucked along lanes paved with colorful cobblestones. Because the area floods regularly and water marks climb high on the old walls, rents have historically stayed low, making it an affordable haven for artists, craftspeople, and creative businesses. What could have been a liability became an identity: the artistic community here has thrived for generations, turning adversity into inspiration and transforming one of the most flood-vulnerable streets in the city into one of its most distinctive and beloved.
Despite repeated floods that have left water marks on the walls of the old buildings — sometimes reaching the second floor — the creative spirit here is unmistakable. Sandy stopped to chat with one of the painters working in an open doorway, and we ended up spending far more time in Artists Alley than we had planned. That is generally a good sign.
St. Stephen’s Cathedral, Passau
This Baroque church, completed in 1688, is dedicated to Saint Stephen and serves as the seat of the Catholic Bishop of Passau. It is renowned for its striking white towers, blue-green domes, and a breathtaking interior that houses the largest cathedral organ in the world — an instrument with 17,974 pipes and 233 registers. Daily noon organ concerts (held May through October) fill the cathedral with sound in a way that is genuinely difficult to describe. Sandy and I sat in the pews and simply listened, and it was one of the most moving musical experiences of our entire trip.
The cathedral stands at the highest point of Passau’s old town and is considered one of the most significant Baroque buildings north of the Alps. Standing outside next to those enormous doors, Sandy looked genuinely small — which gives some sense of the scale of the place.
Veste Oberhaus
This imposing fortress sits high above the city and was originally built in 1219 by the prince-bishops of Passau as a symbol of their power and a defense against both external enemies and internal uprisings. It is a hike to reach Veste Oberhaus from the city center, but the effort is rewarded with panoramic views of Passau and the confluence of the Danube, Inn, and Ilz rivers — sadly something we did not have time for on this visit, though it remains firmly on our list for a return trip. As you look up at the fortress walls, you may also notice that some windows on the old buildings below appear to be painted rather than real. This is a well-known European phenomenon: in certain historical periods, taxes were levied based on the number of windows in a building, so owners bricked up or painted over windows to reduce their tax liability. The painted trompe-l’oeil windows that remain are a charming reminder of that particular piece of fiscal ingenuity.
Altes Rathaus (Old Town Hall) of Passau
Located in the town square on the riverbank, the Altes Rathaus is one of Passau’s most storied buildings. The painted figures on the facade include depictions of Emperor Ludwig of Bavaria and several flag bearers representing various electorates and territories of the Holy Roman Empire. Most striking, however, are the high water marks prominently displayed on the exterior — a historical record of Passau’s frequent and sometimes devastating floods, with some marks reaching astonishing heights well above street level. The building itself dates to the 15th century and was created by combining several patrician houses, later decorated with murals and paintings by artists including Ferdinand Wagner.
Passau offers a unique blend of urban and rural character, with around 50,000 inhabitants and a comfortable, unhurried pace of life. Visitors can wander through its cobbled lanes, underpasses, and archways, appreciating the Baroque churches and patrician houses that crowd every block. The city also has a vibrant student life largely centered around the University of Passau, which opened in 1978 and brings nearly 12,000 students into this beautifully preserved historical setting.
As the afternoon wound down, we returned to the River Duchess for a relaxed evening cruise along the Danube, drinks in hand and new friends at the rail beside us. By this point in the cruise, the group of fellow travelers had become genuinely good company — people who had shared these cities, these stories, and these rivers with us for nearly two weeks. Watching Passau’s Baroque skyline recede behind us as we headed toward Austria felt like one of those perfect travel moments you try to hold onto a little longer than it lasts.
Visitor Information
Passau Tourist Information is located at Rathausplatz 3, 94032 Passau; +49 851 955980; online at tourism.passau.de. St. Stephen’s Cathedral is at Domplatz 1; free admission; daily noon organ concerts from May through October cost approximately €4 and are absolutely worth attending. Veste Oberhaus is at Oberhaus 125 and is open March through November; admission approximately €8 for adults; a shuttle bus runs from the old town for those who prefer not to hike. Altes Rathaus (Old Town Hall) is at Rathausplatz 1; the exterior and flood marks are free to view; guided interior tours are available through the tourist office. Artists Alley (Höllgasse) is free to explore and is best visited in the morning when the studios are open.
Practical Tips for Visiting Passau
Attend the noon organ concert at St. Stephen’s Cathedral. The world’s largest cathedral organ performs daily at noon from May through October. Even if you are not a classical music enthusiast, hearing nearly 18,000 pipes fill that Baroque space is an experience that transcends musical taste. Arrive a few minutes early to get a good seat.
Walk to the Dreiflüsseeck (confluence of the three rivers). The meeting point of the Danube, Inn, and Ilz rivers at the tip of the old town peninsula is one of the most visually striking geographic features in Bavaria — you can actually see the different colors of the rivers where they merge. It is a short walk from the cathedral and entirely free.
Look for the flood marks on the Old Town Hall. The high water marks on the exterior of the Altes Rathaus are one of Passau’s most sobering and fascinating details — some years, floods reached the second floor of buildings throughout the old town. It puts the resilience of this city in remarkable perspective.
Allow time for Artists Alley in the morning. The Höllgasse studios tend to be most active earlier in the day. It is a genuinely charming area — colorful cobblestones, open workshop doors, and artists happy to talk about their work. Sandy could have spent the whole day there.
Take the shuttle to Veste Oberhaus if you can. The fortress museum is excellent and the panoramic view from the top over all three rivers and the rooftops of Passau is considered one of the finest in Bavaria. A shuttle bus runs from the old town if the steep hike is not appealing.
Passau is a natural gateway to Austria. If you are traveling independently rather than on a cruise, Passau is a superb base for day trips across the border into Linz and the Danube Valley. The train connection to Vienna is also quick and direct, making it a logical stopping point on a broader Central European itinerary.
Frequently Asked Questions
Why is Passau called the City of Three Rivers? Passau sits at the precise point where three rivers converge: the Danube (coming from the west), the Inn (arriving from the south, from Austria), and the smaller Ilz (from the north). The confluence is visible from the old town peninsula and is one of the most photographed spots in Bavaria. The Inn actually carries more water than the Danube at this point, which surprises most visitors.
What makes St. Stephen’s Cathedral so special? Beyond its stunning Baroque architecture and ceiling frescoes, St. Stephen’s houses the largest cathedral organ in the world, with 17,974 pipes across five organs and 233 registers. The instrument took its current form over centuries, with the most recent expansion completed in 1981. The daily noon concerts (May–October) are among the most accessible and memorable musical experiences in Germany.
What is Artists Alley in Passau? Artists Alley refers to the Höllgasse neighborhood, a flood-prone area of the old town that has historically attracted artists due to its low rents. The colorful cobblestone lanes are lined with studios, galleries, and workshops. Despite — or perhaps because of — its vulnerability to flooding, it has become one of the most characterful and creative corners of the city.
How often does Passau flood? Passau experiences significant flooding regularly, historically every few years, with particularly severe events in 1954, 2002, and 2013 (when water reached nearly 13 meters above normal levels). The high water marks on the Old Town Hall are a vivid record of these events. The city has extensive flood protection infrastructure but the old town remains vulnerable during major flood events.
What is Veste Oberhaus? Veste Oberhaus is a medieval fortress built in 1219 by the prince-bishops of Passau, perched on a ridge above the city with commanding views over all three rivers. Today it houses the Oberhausmuseum, with collections on Passau’s history, medieval daily life, and local art. The panoramic viewpoint from the fortress is widely considered the finest in the region.
How do I get to Passau? Passau is served by direct trains from Munich (approximately 2 hours) and Regensburg (approximately 1 hour). The train station is a short walk from the old town. Passau is also a standard stop on Danube river cruise itineraries — ships dock close to the old town, making it an easy and highly walkable port day.
Can you visit Passau on a river cruise? Yes — Passau is one of the most popular stops on Danube river cruise routes, often serving as either the starting or ending point for cruises between Germany and Budapest. We arrived on Uniworld’s River Duchess and found the entire old town easily walkable from the dock, with plenty of time to visit the cathedral, Artists Alley, and the Old Town Hall in a single day.
