Fusion projects have a thing for mountain names. "Project Matterhorn" was the code name for the controlled thermonuclear research effort started by Princeton University in 1951 under the leadership of Lyman Spitzer. Thirty years later, when the Max Planck Institute for Plasma Physics had to decide on a name for its stellarator, it chose that of 1,838-metre-high mountain in the Bavarian Alps, "Wendelstein."

A first Wendelstein stellarator (7-AS) operated between 1988 and 2002; a second (7-X) is being assembled in Greifswald, in the German region of Mecklenburg.