An information search/presentation system includes a 3D image converter, landmark
database, search engine, and 3D image browser. The 3D image converter outputs 3D
image data on the basis of aerial photographs obtained by photographing a single
area from different places, with the physical position of the area being specified.
The landmark database stores a pair of a verbal expression and position information
as a unit record the verbal expression pertaining to the name and contents of a
landmark existing in the photographed area. The search engine outputs link information
for page data including associated contents from a set of page data on public view
in response to an input keyword. The 3D image browser creates a 3D stereoscopic
image viewed from a viewpoint position designated by a user on the basis of the
3D image data and the viewpoint position, and presents the image to the user. The
browser also looks up the database in accordance with an associated information
presentation request associated with the position designated by the user. If a
landmark corresponding to the designated position exists, the browser outputs to
the search engine a verbal expression pertaining to the name and contents of the
corresponding landmark as a keyword to present a search result.