The purpose of this study is to inquire into various compornents of visitor center's facilities in natural park. The visitor center usually provides information or interpretive facilities serving visitors to natural park area. There are more than fifty visitor centers in Japan. The study method executed the questionnaire relative to facilities of visitor center from 200 persons who are professional planners of natural park. The answer is obtained from 173 persons, the percentage of answer being 86.5 percent. The summary of interpretation of the results are as follows. (1) The convenient place for visitors takes preference among the many located conditions. (2) The main spaces of visitor center are exhibit room, lecture room and information counter. (3) Architecture area is necessary to be about 600 square meters. For exhibiting room where objects and artifacts are on display, about 260 square meters are preferable. And for lecture room where audio-visual programs or nature interpretation are given, about 140 square meters are suggested. (4) The outline of the park, information of nature trail and various nature interpretation which are configuration of the ground, wildlife and vegetation are important in the display of the visitor center. (5) Display planning must be heightened visitor's interest in the park and its environment. (6) It is as well fitted to visitor center has incidental facilities which include nature trail, parking-place and picnic ground. I described function-plan of visitor center.