An 'infinite edge pool plan' refers to a design for a swimming pool with a feature where one side appears to have no edge, creating an illusion of the water extending into the horizon. This design is popular for creating a seamless transition from the pool to the surrounding landscape. The plan for a German infinite edge pool would involve architectural and engineering considerations such as waterproofing, structural support, and aesthetics. These pools are often built using advanced materials and techniques to ensure safety and durability.