This paper is the part five of the research in Chok (quadrangle) architecture of the royal buildings of Nepal. In this paper, space design and significance of the space of Sundara Chok which were typical patterns of Chok architecture of it were examined, on the basis of god images with struts located in a courtyard. As the result, we were able to draw out the following conclusion. Design of Sundara Chok showed a watering place by pictorial images of Hindu gods and goddesses centering on Visnu and a sacred place by pictorial images of the diety of heavenly body. It is an architectural space to embody the Hindu cosmos. This space was designed to win devine favor of Visnu with, the power to maintain the older of the world and, at the same time, it was Malla king's own Hindu cosmos. In other words, Sundara Chok was an informal architectural space that the king could become one with the gods routinely, and was a private place that embodied the continuation of peaceful reign of the Malla royal family.
