A navigation device, comprising: a display unit; a storage unit adapted to store facility information for identifying a plurality of facilities, location information of each of the facilities, and an icon of each of the facilities; and an event processing unit adapted to configure a display screen in a manner that causes the display unit to display a first display area for displaying the icons of the facilities and a second display area for displaying a time line of a predetermined period; wherein the second display area comprises a free area that is an area for designating as a destination an icon that has no limitations on arrival time and departure time, and wherein the second display area comprises a lock area that is an area for designating as a destination an icon that has limitations on arrival time and departure time; wherein the event processing unit is configured to: when a plurality of icons displayed in the first display area are placed on the time line displayed in the second display area, use the location information of facilities that are associated with the plurality of icons to search for a route for visiting the facilities in order of the placement of the icons on the time line and calculate a required time necessary to travel between each of the facilities represented on the time line; and when one of the plurality of icons placed on the time line is placed in the lock area and is of a facility that cannot be reached at a date and time corresponding to a point on the time line where the one of the plurality of icons is placed, display the one of the plurality of icons as "incompatible"; and when the one of the plurality of icons is placed in the free area and is of a facility that cannot be reached at a time and date corresponding to a point on the time line of the second display area where the one of the plurality of icons is placed, the event processing unit is configured to avoid displaying the icon that is placed in the free area as "incompatible". a display unit; a storage unit adapted to store facility information for identifying a plurality of facilities, location information of each of the facilities, and an icon of each of the facilities; and an event processing unit adapted to configure a display screen in a manner that causes the display unit to display a first display area for displaying the icons of the facilities and a second display area for displaying a time line of a predetermined period; wherein the second display area comprises a free area that is an area for designating as a destination an icon that has no limitations on arrival time and departure time, and wherein the second display area comprises a lock area that is an area for designating as a destination an icon that has limitations on arrival time and departure time; wherein the event processing unit is configured to: when a plurality of icons displayed in the first display area are placed on the time line displayed in the second display area, use the location information of facilities that are associated with the plurality of icons to search for a route for visiting the facilities in order of the placement of the icons on the time line and calculate a required time necessary to travel between each of the facilities represented on the time line; and when one of the plurality of icons placed on the time line is placed in the lock area and is of a facility that cannot be reached at a date and time corresponding to a point on the time line where the one of the plurality of icons is placed, display the one of the plurality of icons as "incompatible"; and when the one of the plurality of icons is placed in the free area and is of a facility that cannot be reached at a time and date corresponding to a point on the time line of the second display area where the one of the plurality of icons is placed, the event processing unit is configured to avoid displaying the icon that is placed in the free area as "incompatible". when a plurality of icons displayed in the first display area are placed on the time line displayed in the second display area, use the location information of facilities that are associated with the plurality of icons to search for a route for visiting the facilities in order of the placement of the icons on the time line and calculate a required time necessary to travel between each of the facilities represented on the time line; and when one of the plurality of icons placed on the time line is placed in the lock area and is of a facility that cannot be reached at a date and time corresponding to a point on the time line where the one of the plurality of icons is placed, display the one of the plurality of icons as "incompatible"; and when the one of the plurality of icons is placed in the free area and is of a facility that cannot be reached at a time and date corresponding to a point on the time line of the second display area where the one of the plurality of icons is placed, the event processing unit is configured to avoid displaying the icon that is placed in the free area as "incompatible".