In the preparation of urban designs, it is important for the designer to understand the space feature of the project district and to obtain the design resource from the site. In our design studio, students take pictures of a point of interest (POI) in the project district and discuss the design concept of the district based on the photographs. To share the photographs obtained by the students during the field survey along with the attribute information and shooting positions, the present authors have developed a Web-based image archive system as an effective resource for a design studio. This system registers the photographs taken in the surveying district on GoogleMap and simultaneously displays the images on a three-dimensional city model. In this paper, we discuss the development of a Map-based Repository of Image (MRI) system to share the photographs of a city. Moreover, we attempt to evaluate its pedagogical effect in the design studio.