A "ninja house" is a type of home designed with features that promote stealth and agility, often inspired by the traditional dwellings of ninja warriors in Japan. These houses may include hidden rooms, secret passages, and climbing walls, allowing for quick movement and concealment. The architecture of a ninja house often emphasizes minimalism and functionality, with an open layout that encourages fluid movement. Some designs incorporate elements like sliding doors and low furniture, which can help residents navigate quietly and efficiently, reflecting the skills and lifestyle of historical ninja practitioners.