This website is one of the outcomes of Dr Artemis Yagou’s research project ‘How they Played: Children and Construction Toys (c. 1840–1940)’, funded by the German Research Foundation (DFG) (2016–2021) and conducted at the Research Institute of the Deutsches Museum, Munich. The main outcome of the project is the book Construction Toys and Modern European Culture: Education, Politics, and Technology, 1830 to 1940 (forthcoming, Routledge, 2025). The website is a visualisation of the book and was created by Artemis Yagou in 2025, while a Scholar in Residence at the Deutsches Museum.