Cathedral
The Old Town lies on a narrow peninsula at the confluence of the rivers Inn and Danube. Hidden backyards, romantic corners and many alleys, some of which drop steeply to the banks of the rivers, give the city its Italian character. The Old Town is dominated by St. Stephen's Cathedral, the domicile of Passau's bishop. It is the largest baroque cathedral north of the Alps. With 17,974 pipes and 233 registers, the cathedral organ is the largest cathedral organ in the world and the largest organ outside the United States.
Lamberg Palace
Beside St.Stephen, on the cathedral square, the highest point in the Old Town the Lamberg Palace is worth to be mentioned; there in 1552 the Passau Treaty was signed.
Old Residence and City Theatre
South of the cathedral is the Old Residence, which now houses the regional court. In the former prince-bishop's opera house is the city theater, which was originally built in 1645 as a ball house.
City Hall and Glass Museum
On the banks of river Danube is the 14th-century city hall with its 38-meter tower, which was added in 1890.
The Wilder Mann patrician house on the Rathausplatz houses the Passau glass museum with outstanding exhibits of the world-famous Bohemian glass.
Oberhaus Fortress
The 'Veste Oberhaus' is located high above the city in the north. Among other things, it houses the very interesting interactive Oberhausmuseum.
St.Michael and Gisela Tomb
Not far from the town hall is the church of St. Michael with the neighboring complex of the former Jesuit college, further towards the confluent of the rivers is the former Benedictine nunnery in Niedernburg with the tomb of Blessed Gisela, the wife of Hungary's first king Stephen.
