Although CLIL (Content and Language Integrated Learning) is gaining momentum across the world due to its dual focus, the implementation of the methodology faces several challenges. One of the obstacles is the lack of adequate CLIL teaching materials. The current thesis aims to fill in the gap by compiling teaching materials on the principles of the CLIL methodology for teaching medieval towns in the UK and Estonia in form 7. The created teaching materials were piloted in two schools in history and English lessons. Two practising teachers (one of history and the other of English) were asked to evaluate the materials to receive feedback on their quality and enhance the learning process by providing suggestions for further improvements.