This project is an exploration on building environmental performance. On it we will use different advanced simulation tools like DesignBuilder and Climate Consultant to analyze a recommended building. We are focusing on the Mamakating Visitor Center in Sullivan County, New York as our case study. Our first studies included analyzing the site conditions and elements such as wind, sun, climate, and weather. We studied the environment surrounding the building and its climate using the two software mentioned above. We found that during the winter, we should block the wind and get more sun in. However, in the summer, we should increase the wind and provide shadows to make it a comfortable place. From the site analysis we moved on to explore various materials that can be use in the walls and windows to simulate energy in order to reduce the amount of energy consumed by the building and make it more sustainable.