A navigation device includes a scenic information searching unit for searching
for drop-in information about a favorable place for drop-in around a guide route
leading from a departing place to a destination based on the drop-in information
set in acquired map data. A route searching unit searches for the guide route via
a drop-in route running through the favorable place for the drop-in based on the
drop-in information searched by the surrounding drop-in information searching unit
and calendar information detected by the time computing unit.