The history of the Passchendaele Museum started in 1987. It featured the first exhibition about the Third Battle of Ypres (1917). This exhibition consisted of visual materials from the
Imperial War Museum. This initial exhibition was considered successful, with 9,000 visitors, who attended, amongst other events, a large ceremony at
Tyne Cot Cemetery and battlefield tours. It was decided to put the château at the museum's disposal, with attention fixed on the war years, but also the Zonnebeke Augustinian Abbey and local history. The museum itself opened in 1989. In 2002, it was decided to renew the museum. The museum was increased to three storeys and became a classic historical museum with a reconstructed
dug-out being built. The renewed museum opened on
Anzac Day 2004. In 2007, during the commemoration of 90 years since the 'Third Battle of Ypres', the museum organised six thematic exhibitions that took place in different locations, along with creating three new trails. In 2014, the former vicarage of Zonnebeke was restored to be used as research centre. == Building and grounds ==