One of Andernach's natural attractions is the world's highest (max. ) cold-water geyser, driven by carbon dioxide with force generated in a fashion similar to that in a shaken bottle of table water. It is located a little less than half a mile downstream from the "Crane" in the Nature Reserve of "Namedyer Werth" (MHG for "island of Namedy") now a peninsula. Activated for the first time in 1903, the geyser was shut down in 1957 but reactivated early in the current century as yet another city attraction.