example of a rooftop infinity pool

Quick answer：

A rooftop infinity pool is a type of swimming pool that is designed to give the illusion of water extending to the horizon, creating a seamless blend between the pool and the surrounding landscape. This is achieved by having the pool's edge at the same level as the building's roof, allowing the water to appear as though it continues beyond the building. Infinity pools are often installed on high-rise buildings or luxury resorts for their aesthetic appeal and panoramic views.