The story
Welcome to one of Munich’s most atmospheric corners. Stand for a moment and look at the building beside you: the Müllersches Volksbad. This Art Nouveau masterpiece, with its towering clock tower and turquoise domes, is more than just a public pool; it is a gateway to the history of the Isar river.
But look down at the water rushing beneath the bridge. This isn't the main Isar. This is the Auer Mühlbach, a stream that has whispered through this district for nearly a thousand years.
The Mühlbach is a master of disguise. It branches off from the Isar further south and winds its way through the neighborhood of the Au for seven kilometers. While the main Isar is grand and open, the Mühlbach is intimate and secretive.
For much of its journey, it disappears behind the rows of residential houses, flowing through private backyards and under ancient stone walls, earning its reputation as the hidden lifeblood of the district. In the Middle Ages, this water was the engine of industry. The name Mühlbach literally means Mill Stream.
Long before Munich was a city of technology and high fashion, it was a city of mills. At one point, over a dozen waterwheels churned along this narrow stretch, grinding grain, sawing timber, and even pounding rags into paper. This was the working-class heart of the area.
While the royalty lived across the river in the Residenz, the Au was home to craftsmen, tanners, and day laborers who depended on this rushing water for their survival. The Müllersches Volksbad itself owes its existence to the spirit of this neighborhood. When it opened in 1901, it was the most modern and expensive swimming pool in the world, a gift from the engineer Karl Müller.
He wanted the poor residents of the Au, who often lived in cramped houses without running water, to have a place for hygiene and dignity. Even today, the bathhouse uses the stream’s proximity for its complex cooling systems, continuing a partnership between architecture and water that has lasted over a century. As you walk along the path, listen to the sound of the water.
It’s faster and more purposeful than the sprawling Isar. Notice how the trees lean over the banks, creating a green tunnel that feels miles away from the city traffic. You might spot a grey heron standing perfectly still in the shallows or a local sitting on a hidden garden bench that juts out over the current.
This is the magic of the Auer Mühlbach. It is a thousand-year-old survivor that refused to be paved over, reminding us that even in a bustling metropolis, there are still secret veins of nature and history flowing just out of sight.