Fallingwater, as part of the 20th-Century Architecture of Frank Lloyd Wright, has been inscribed on the World Heritage List. Its inscription confirms that the property deserves protection for the benefit of all humanity because of its outstanding universal value. It is one of eight properties that collectively demonstrate the qualities of “organic architecture” developed by Wright, a singular contribution to global architecture in spatial, formal, material, and technological terms. Fallingwater has also been designated a National Historic Landmark and possesses national significance in commemorating the history of the United States of America.