Stay poi estimation device

A stay point of interest (POI) estimation device, comprising processing circuitry configured to

• estimate a stay POI that is a POI in which a user stays in an unassociated stay that is a stay not associated with the POI, among stays comprised in user information that is a chronological history of a stay during movement of each user, a part of which is associated with the POI in which the user stays, and adjacency of each user to other users, on the basis of the user information, wherein the processing circuitry is further configured to perform a simulation assuming that the user moves via a POI candidate that is a candidate of the stay POI for each user, and estimating the stay POI from the POI candidate, on the basis of a chronological match between adjacency between users extracted in the simulation and adjacency comprised in the user information.