A true gem in our collection is more than a hundred- year-old photoplasticon manufactured in the workshop of August Fruhmann, a photoplasticon inventor. Our photoplasticon is one of a few objects of this type preserved in the world. 25 persons can seat at this instrument at the same time and watch still images in 3D. The drum contains a series of 50 images. The photoplasticon presents slides that date back to the beginning of the 20th century.