Whispering gallery to the walls, an effect that was discovered in the whispering gallery of St Paul's Cathedral in London. The extent to which the sound travels at St Paul's can also be judged by clapping in the gallery, which produces four echoes. Other historical examples are the Gol Gumbaz mausoleum in Bijapur and the Echo Wall of the Temple of Heaven in Beijing. A hemispherical enclosure will also guide whispering gallery waves. The waves carry the words so that others will be able to hear them from the opposite side of the gallery. The gallery may also be in the form
Whispering Pines, Gila County, Arizona Whispering Pines, Gila County, Arizona Whispering Pines is a census-designated place (CDP) in Gila County, Arizona, United States. It is one of two locations in Arizona with this name, the other being a populated place in Greenlee County. The population was 148 at the 2010 United States Census. Whispering Pines is located in northern Gila County in the upper valley of the East Verde River, between Washington Park to the north and Beaver Valley to the south. It is north of Payson. According to the United States Census Bureau, the Whispering Pines CDP has a total area of , all