Grafeneck Euthanasia Centre, Memorial site in Gomadingen, Germany.

Grafeneck is a memorial site in the former Grafeneck Castle, a castle-like property in Gomadingen, Baden-Württemberg. The castle was built around 1560 as a hunting lodge for the Dukes of Württemberg and expanded into a Baroque palace between 1762 and 1772. Since 2005 the site has housed a documentation centre with the permanent exhibition "Grafeneck 1940 – Sick Murder in National Socialism", and the cemetery holds a memorial with an open chapel designed by sculptor Rudolf Kurz.

Grafeneck Castle was built around 1560 as a hunting lodge for the Dukes of Württemberg and expanded into a Baroque palace between 1762 and 1772. In 1929 the Samariterstiftung bought it and opened a home for disabled people. On 14 October 1939 it was confiscated, and from January to December 1940 it served as the first Nazi killing centre of Action T4, where 10,654 people were murdered.

The site teaches lessons about ethics, human rights, and the consequences of discrimination against people with disabilities through personal stories and documents. Visitors encounter how societal prejudices and devaluing language can lead to systematic harm.

The memorial offers guided tours, archival materials, and educational resources in various formats. Plan sufficient time for your visit, as the exhibition is extensive and emotionally demanding.

This location was where the Nazi regime first implemented a systematic killing program using carbon monoxide gas chambers. This operational model was later replicated at other sites across occupied territories.