Most aspects of animal behavior are based on decisions. One of the most extensively researched type of decisions is spatial choice -that uses spatial information to suppress inappropriate behaviors (Bannerman et al. 2012). The population activity of place cells in the dCA1 area underlies spatial choice and memory. Place cell activity can be recorded when an animal is freely moving throughout the space. However, in the majority of studies on spatial choices, behavior is investigated with protocols that require direct involvement of the researcher. Additionally, traditional tools used for assessment of spatial choice do not have required dimensions to monitor changes within place cells’ activity using genetically encoded, and relatively slow, calcium indicators. Here, we present a new system for monitoring mice activity and navigation with our recent findings on behavioral protocol that can be employed within it. This apparatus is built of integrated modules including camera system, cue display system, liquid reward dispensers and door control system. Animals are tested within 3 connected corridors, parted with automatic doors, where they can roam undisturbed and consume reward (sweet milk) at the end of reward arms from automatic dispensers. The automation of our task enables evaluation of spatial choices without the researcher's direct involvement. Additionally, an open construction of the maze allows for recording of the brain cell activity of a freely moving mouse with the use of a miniature microscopy and optogenetic tools along with recording of the animal’s behavior within the entire space.