Illustration of Germany's infinity pool

Quick answer：

An infinity pool, also known as a vanishing edge pool, is a pool with one or more edges that appear to blend into the horizon or surrounding landscape, creating the illusion of the pool extending to infinity. Germany, known for its innovative architectural designs, has several examples of infinity pools, often integrated into luxurious resorts or high-end residential complexes. These pools are designed with a channel along the edge that diverts water over the side, creating the seamless visual effect.