This conceptual residential project is located in Belgrade, Serbia, and draws inspiration from the structure of a roller coaster. Placed on a steep terrain, the roller coaster acts as a skeletal framework that both supports and shapes the architectural forms within it. The architecture follows its curves, adapting to the topography while introducing movement, rhythm, and structural playfulness. The idea transforms a wild and thrilling object into a creative architectural system — challenging conventional design and proposing a new way of building in complex landscapes.