The Alzette is a 73 kilometers long river starting in France and running through Luxembourg. Later the water is delivered via river Sauer into the river Mosel. At Lëtzebuerg the Alzette passes through the city quarters Grund and Pfaffenthal as a vital vein of the city. Especially in Grund (underneath the casemates) the river is beautifully integrated into the city.
You can sit next to the river close to the Neumünster abbey or in the bars further down to the South. You can pass the river on amazing ancient bridges like the Pont du Stierchen. In the last years flood water was also a problem here and the inhabitants now prepare for events like these.