French infinity pool in real life

Quick answer：

An infinity pool, also known as a negative edge or vanishing edge pool, is a design feature in which the water's edge appears to disappear over the horizon, creating an optical illusion of water extending to the horizon. This design often incorporates a waterfall or other water features to enhance the effect. The real-life French infinity pool would feature such a design, typically with a seamless transition from the pool to the surrounding landscape.