Indoor photo of an infinity pool

Quick answer：

An indoor infinity pool is a unique feature that combines the luxury of an infinity pool with the comfort of an indoor environment. It typically features a glass or frameless glass facade that allows for panoramic views, and is equipped with advanced heating and filtration systems to maintain water quality and temperature. These pools are often found in high-end hotels, resorts, or private homes and are designed to provide a serene and luxurious experience.