EL-DE Haus is a former Gestapo headquarters that now serves as the NS Documentation Centre. It is Germany's largest regional memorial site dedicated to the Nazi era. Visitors can explore the preserved prison cells in the basement, where over 1,800 inscriptions by former prisoners offer a poignant glimpse into the past. Given the museum's somber subject matter, it's recommended for visitors aged 14 and above.
The basement contains ten preserved prison cells, where political prisoners, forced laborers, and resistance members were detained and tortured. The walls still bear over 1,800 inscriptions written by inmates, providing a haunting testament to their suffering. The upper floors feature detailed exhibits covering Cologne under the Nazi regime, with personal testimonies, photographs, documents, and artifacts. The museum also highlights the persecution of Jewish communities, political dissidents, and other marginalized groups.