PARKING LOT GUIDANCE SYSTEM AND PARKING LOT GUIDANCE METHOD

A parking lot guidance system includes: a determination unit configured to determine whether the parking lot is in a congested state based on a result of detection from a detection unit; a selection unit configured to select a predetermined number of empty spaces in the parking lot based on a determination from the determination unit; and a display unit configured to display the predetermined number of empty spaces. The selection unit selects the empty spaces from further inside in an extending direction of the vehicle passage in a first parking block which is a parking block including an empty space and being closer to a facility entrance provided at a position different from that of a parking lot entrance of the parking lot out of a plurality of parking blocks along a plurality of vehicle passages when the determination unit determines that the parking lot is in the congested state.