The MODELLidee is an annual event held in autumn at the HanseMesse in Rostock, known as the largest model-building exhibition in Mecklenburg-Western Pomerania. Organized by inRostock GmbH Messen, Kongresse & Events, this fair is a meeting point for model-building enthusiasts, technology fans, and everyone excited about innovative creations. HanseMesse Rostock is renowned for its spacious exhibition halls and modern facilities, providing the ideal setting for presenting a plethora of model-building creations. At MODELLidee, the focus is on the fascination of model building, from detailed replicas to functional miniature models. Core themes of the fair include model train exhibitions, a large truck and excavator course, and a water basin for thrilling demonstrations. Additionally, the flight area, with its high-speed air shows, and the ship model exhibition, including offshore models, attract numerous visitors. This event goes beyond a simple exhibition by offering interactive elements such as model car racing and the opportunity to experience model airplanes, ships, and cars in action. A special highlight of MODELLidee is the thoughtful design of the model-building area. Both young and experienced model builders can immerse themselves in a world that combines technology, craftsmanship, and passion for model building. The fair introduces a wide range of products and services, from basic model-building kits to specialized tools and materials, and promotes the exchange of knowledge and techniques among like-minded individuals. MODELLidee is not just an exhibition but also a vibrant community that nurtures interest in technical innovations and model building. Through its integration with SPIELidee, the fair expands its reach and offers visitors a more comprehensive experience. The MODELLidee will take place on 3 days from Friday, 07. November to Sunday, 09. November 2025 in Rostock.