Fort Ebersberg, also known as Fort Rüdlingen, was built between 1938 and 1940 in the Swiss Canton of Zurich to guard the Rhine against a German invasion at the opening of World War II.

It is the only such position in the Zurich canton, located near the town of Berg am Irchel.

The fort was built between 1938 and 1940, buried in sandstone on a north-facing slope.

[1] Ebersberg's primary weapons were two semi-automatic 75mm guns in separate blockhouses,[2] intended to hamper a German crossing of the Rhine.

[3] The site is maintained in preservation under a long-term lease by the Military Historical Foundation of the Canton of Zurich.