Illustration of an outdoor infinity pool

Quick answer：

An outdoor infinity pool is a type of swimming pool that is designed to look as if it extends to the horizon, creating the illusion of a pool that goes on forever. These pools are often built on the edge of cliffs or overlooking stunning landscapes to enhance the visual effect. The pool's design features a gradual slope and a flat edge that merges with the surrounding water or landscape, making it appear to have no end. Infinity pools are popular in resorts, luxury homes, and high-end residential developments due to their aesthetic appeal and unique design.