Picture of rooftop infinity pool

Quick answer：

An infinity pool on a rooftop is a design feature where a pool extends over the edge of a building, creating the illusion that the water flows to the horizon. These pools are often installed in luxury hotels or high-end residential complexes. They offer a unique vantage point for relaxation and a stunning view of the surroundings. The concept of infinity pools is inspired by nature, as they mimic the effect of water meeting the sky at the horizon. However, they require careful engineering to ensure safety and prevent water from escaping.