Parking assistance device and parking assistance method

A parking assistance device that assists parking of a vehicle, comprising:

• a position acquiring unit configured to acquire a vehicle position as a position of the vehicle;
• a route acquiring unit configured to acquire a plurality of routes from the vehicle position to each of a plurality of parking positions, the plurality of routes being connected by a junction;
• a judging unit configured to judge whether execution of automatic parking is possible, the automatic parking being such that the vehicle travels on at least one of the plurality of routes and is parked in a corresponding one of the plurality of parking positions;
• a suggesting unit configured to, when execution of the automatic parking is possible, suggest the automatic parking before the vehicle passes through a junction between a route to a parking position where execution of the automatic parking is possible and another route;
• and
• a parking control unit configured to execute the automatic parking using a route for executing the automatic parking that has been suggested.