Aerial view of an infinity pool design

Quick answer：

An infinity pool, also known as a vanishing edge pool, is a pool design feature where one side appears to have no edge, creating the illusion of water extending to the horizon. This design requires careful planning and engineering to ensure structural stability and water safety. The pool is often built with a slight slope or a weir that directs water over the edge, into a separate reservoir or directly into the ocean or lake.