A roof-top outdoor swimming pool is a type of swimming pool designed to be situated on the roof of a building, often with a view of the surrounding landscape. These pools can range from small private pools to large communal ones in hotels or residential complexes. They typically require careful structural engineering to ensure the building's stability and waterproofing. Roof-top pools often come with safety features such as railings and emergency exits. The design of a roof-top pool also involves considerations for climate, maintenance, and aesthetic integration with the building's architecture.