Karuizawa Toy Kingdom

Karuizawa Toy Kingdom is a family-oriented theme park in Agatsuma-gun, Gunma Prefecture, Japan, set amid the scenic mountain landscape of the Karuizawa resort area. Covering an area equivalent to Tokyo Dome, the park is organized into three main zones: twelve imaginative indoor toy-themed rooms filled with interactive play and curated collections, approximately 120 outdoor adventure elements including a forest obstacle course, trout fishing, and water play, and classic amusement rides suitable for infants through older children. The park philosophy centers on learning through play and family bonding in a natural setting. An adjacent official hotel makes overnight stays convenient, allowing guests to explore nearby attractions such as waterfalls and outlet shopping. Karuizawa Toy Kingdom is an ideal destination for families seeking creative, active, and nature-connected experiences in the cool mountain air of Gunma Prefecture.