In the past two decades, the popularity of Extreme Sport (X-Sport) has rapidly increased in Hong Kong. “Exploration of Excitement” would be the main reason why teenagers and young adults would like to play X-Sport. Unlike other sports, X-Sport does not require any rules, restrictions or physical requirements for its players, which provides more freedom and creativity. However, the general public does not agree with this particular interest group due to their misunderstanding with limited knowledge of the X-Sport. Also, there are only few existing X-Sport park and related facilities in Hong Kong and most of them are located at unwanted spaces with poor environmental and facilities qualities, which leads X-Sport player would play at local parks and unused space in their neighbourhood. Damages on landscape feature are normally appeared in these local parks recreational spaces. Due to the lack of societal supports and deficiencies in government, there are only six existing X-Sport park in Hong Kong, where they are all inaccessible and far apart. This thesis aims to promote X-Sport by using an X-Sport park as a median to integrate both young and old generations in physical and social aspects, not just exists as a functional space for X-Sport players. A roundabout site, Chai Wan Roundabout Garden, in major transport interchange in Hong Kong Island is selected for the development of this concept. Three stages design process has been incorporated. The first design stage has developed based on the primary site-observation and comprehensive site analysis. The second design stage is to conduct a special study of a landscape technique with both local and international case studies. The third design stage is to combine both first and second stages development and formulate the final design solution. Comments from first and second juries has been addressed and amended accordingly. / published_or_final_version / Architecture / Master / Master of Landscape Architecture