In the U.K., more than 140 Natural Burial Grounds are in operation, showing that the style is gradually being accepted by the public as an alternative. Yet, the desirable design principles for the burial grounds of this style has not been established or even studied. In this paper, a model of landscape framework - "horizons", "pathways", and "things" - is introduced as the basis of the analytical study on the design of the spiritual landscapes. The framework is created based on the idea of "place memory" that was originally proposed by E. S. Casey to describe the structure of the landscape that sustains people's memory in general. Two cases are analyzed using this model, and the results of the analyses are compared with each other. In both cases, the roles within the landscape framework that are played by various landscape elements such as the different types of memorials, the trees, the paths, and the furniture are identified. And through the comparison of the cases, two different types of landscape framework - that of personal and collective - are identified, and it is found that each type of the framework is given significance in the two landscapes to different degrees, reflecting the burial grounds' management policies and the long term visions as to the their landscapes.