The Heilig Grafinstituut school has occupied its current location since 1825, comprising a convent for Heilig Graf Sisters and a primary and secondary school for young women, a day school for needy women, Sunday school and a teacher’s training school. It possesses about 5000 lantern slides, including both series by both commercial producers (Maison de la Bonne Presse, Mazo etc.) and self-made slides. The slides are mainly educational (covering a range of topics, such as volcanoes, industrial production of glass and steel, mining, views of different countries, art history etc.). A substantial part has a religious dimension (depicting the Bible, the life of Joan of Arc etc.). Several series can be linked to written notebooks of lecturers.

Slides used in a Geography class on rain forests from the collection of Heilig Graf School, Turnhout

6 lantern slides, one of them teacher-made (bottom left), from the series ‘Earth’s crust & mountains’.

“Klauwen van een allosaurus: langste vinger meer dan 12 duim lang” from the series 'aardkorst/bergen'.