Today the utilization of 3D mock-ups is very common in GIScience. Since 2001, with the emergence of Google Earth, citizen have become used to virtual globes. However, a majority of applications using these technologies are still restricted to professional users. This is the case with urbanism and decision making where only static 3D scenes are shared with the public. In this paper, we describe the early results of a 3D virtual globe platform to support participatory decision making processes for urban planning. Our concept is built on the visualization of specific scenes. Context, content and design are crucial elements that need to be considered for the development of any participatory decision making tool. Our goal is the development of a web-based platform that focuses on collecting feedback from realworld citizen. The next step of this project is to utilize the platform in a real-world scenario and to evaluate the feedback from real-world citizen.