Floor plan of an infinity pool on the penthouse

Quick answer：

An infinity pool on a penthouse typically refers to a large, uninterrupted pool that appears to merge with the horizon, creating the illusion of being limitless. The floor plan of such a pool would include details of the pool's shape, size, and placement on the penthouse roof, as well as surrounding deck areas and any associated features like sunbathing platforms, water features, or landscaping.