Roof-top unbounded swimming pool plan

Quick answer：

This refers to a design plan for a swimming pool that is installed on the roof and does not have defined boundaries, potentially extending over the edge of the building. Roof-top swimming pools are a luxury feature often found in high-end residential or commercial buildings. The design of such a pool would involve considerations for safety, structural integrity, and aesthetics, including the pool's shape, size, and integration with the building's architecture.