WOctagon buildings and structures are characterized by an octagonal plan form, whether a perfect geometric octagon or a regular eight-sided polygon with approximately equal sides.
WA roundhouse is a type of house with a circular plan, usually with a conical roof. In the later part of the 20th century, modern designs of roundhouse eco-buildings were constructed with materials such as cob, cordwood or straw bale walls and reciprocal frame green roofs.
WA round barn is a historic barn design that could be octagonal, polygonal, or circular in plan. Though round barns were not as popular as some other barn designs, their unique shape makes them noticeable. The years from 1880–1920 represent the height of round barn construction. Round barn construction in the United States can be divided into two overlapping eras. The first, the octagonal era, spanned from 1850–1900. The second, the true circular era, spanned from 1889–1936. The overlap meant that round barns of both types, polygonal and circular, were built during the latter part of the nineteenth century. Numerous round barns in the United States are listed on the National Register of Historic Places.
WThe American Federal Building, also known as the American Federal Savings and Loan Building, the Coral Gables Building, and the Round Building, was an iconic seven-story office building in downtown Orlando, Florida. The bottom two floors, encircled with a cast concrete brise soleil comprise the original building, completed in 1963. The building's unique architecture and history have inspired efforts to preserve it from demolition.
WThe Amphitheatre of El Jem is an oval amphitheatre in the modern-day city of El Djem, Tunisia, formerly Thysdrus in the Roman province of Africa. It is listed by UNESCO since 1979 as a World Heritage Site.
WApple Park is the corporate headquarters of Apple Inc., located at One Apple Park Way in Cupertino, California, United States. It was opened to employees in April 2017, while construction was still underway, and has superseded the original headquarters at 1 Infinite Loop, which opened in 1993.
WBankstown Reservoir is a heritage-protected water tower and a local landmark situated in the suburb of Bankstown, Sydney, New South Wales, Australia. Located 22 kilometres (14 mi) west of Sydney CBD, the reservoir is elevated and was built on reinforced concrete piers, which is one of the oldest of this type that is still in use. The reservoir features various decorative attributes, plastered by hand, which lack in other functional reservoirs. Established in 1920, the reservoir serves a large area of South-Western Sydney.
WThe Capitol Records Building, also known as the Capitol Records Tower, is a 13-story tower building in Hollywood, Los Angeles. Designed by Louis Naidorf of Welton Becket Associates, it is one of the city's landmarks. Construction began soon after British company EMI acquired Capitol Records in 1955, and was completed in April 1956. Located just north of the Hollywood and Vine intersection, the Capitol Records Tower houses the consolidation of Capitol Records' West Coast operations and is home to the recording studios and echo chambers of Capitol Studios. The building is a Los Angeles Historic-Cultural Monument and sits in the Hollywood Boulevard Commercial and Entertainment District. It has been described as the "world's first circular office building."
WA circular linhay is an ancient type of structure found in England, particularly associated with Devon. Linhay, also spelled linny and linhay, is a type of farm building with an open front and usually a lean-to roof. In Newfoundland English a linney is similar as a storage space, kitchen, or porch but as an addition to the rear of a house, and in American English it is an open, lean-to shed attached to a farmyard. Linhays were used to store hay above and shelter cattle or farm machinery.
WThe Circular Mound Altar is an outdoor empty circular platform on three levels of marble stones, located in Beijing, China. It is part of the Temple of Heaven.
WThe Circus Building on Axel Torv in Copenhagen, Denmark. is a circular building completed in 1886 to serve as a venue for circus performances. The last circus to use the building was in 1990
WThe E.L. Smith Roundhouse Granite Shed is a historic granite shed at 23 Burnham Street in the city of Barre, Vermont. Built in 1889, it is the only known surviving example of a circular granite cutting shed in the United States. It was listed on the National Register of Historic Places in 2011.
WThe Colosseum, is an oval amphitheatre in the centre of the city of Rome, Italy, just east of the Roman Forum and is the largest ancient amphitheatre ever built, and is still the largest standing amphitheater in the world today, despite its age. Construction began under the emperor Vespasian in 72 and was completed in AD 80 under his successor and heir, Titus. Further modifications were made during the reign of Domitian. The three emperors that were patrons of the work are known as the Flavian dynasty, and the amphitheatre was named the Flavian Amphitheatre by later classicists and archaeologists for its association with their family name (Flavius).
WThe Temple of Heaven is an imperial complex of religious buildings situated in the southeastern part of central Beijing. The complex was visited by the Emperors of the Ming and Qing dynasties for annual ceremonies of prayer to Heaven for a good harvest.
WThe Higgins Doctors Office Building is a historic commercial building at 1207-1211 E. Main St. in Richmond, Virginia. Built in 1954, it is a distinctive and unusual example of a round commercial building. It is a single story in height, with a flat roof. Its exterior walls are a combination of glass windows and concrete blocks with cross motif, with outside courtyard terraces. The entrances are set in recesses. The property's landscape continues a circular theme, with flower beds, fencing, and parking arranged in concentric patterns around the structure. It was designed by the Washington, DC firm of Deigert & Yerkes.
WHilliard Towers Apartments, formerly known as the Raymond Hilliard Homes CHA housing project, is a residential high-rise development in the near South Side of Chicago, Illinois. It was designed by Bertrand Goldberg and is bounded by Clark Street, State Street, Cullerton Street, and Cermak Road. In 1999, it was placed on the National Register of Historic Places as the Raymond M. Hilliard Center Historic District.
WThe Holyoke Opera House was a theatre operating in Holyoke, Massachusetts during the 19th and early 20th centuries. Built in 1877, and christened on March 25, 1878, the theater was built by then-mayor William Whiting who privately-funded its construction along with the adjoining "Windsor House" hotel. Designed by architect Clarence Sumner Luce, its interior was decorated by painter and designer Frank Hill Smith, who is best known today for the frescoes in the House of Representatives' chamber in the Massachusetts State House, and whose commission for the venue's main hall paintings has been described by the American Art Directory and historian John Tauranac as one of his definitive works.
WHopewell Centre is a 222-metre (728-foot), 64-storey skyscraper at 183 Queen's Road East, in Wan Chai, Hong Kong Island in Hong Kong. The tower is the first circular skyscraper in Hong Kong. It is named after Hong Kong–listed property firm Hopewell Holdings Limited, which constructed the building. Hopewell Holdings Limited's headquarters are in the building and its Chief executive officer, Gordon Wu, has his office on the top floor.
WThe Hotel Grand Chancellor Townsville, nicknamed the "Sugar Shaker" by the locals, is currently the tallest building in Townsville, Australia, standing at 76-metre (249 ft) tall. The building is located in the central section of Flinders Street next to Townsville Bulletin Square.
WThe Hurd Round House near Hurdsfield, North Dakota was built in 1900.
WThe Integratron is a 38 feet (12 m) tall cupola structure with a diameter of 55 feet (17 m) designed by ufologist and contactee George Van Tassel. Van Tassel claimed the Integratron was capable of rejuvenation, anti-gravity and time travel. He built the structure in Landers, California, following instructions that Van Tassel vehemently claimed were provided directly to him by visitors from the planet Venus. The Integratron machine was started in 1957, the structure erected in 1959. It was financed predominantly by donations, including funds from Howard Hughes.
WMadison Square Garden, colloquially known as The Garden or in initials as MSG, is a multi-purpose indoor arena in New York City. Located in Midtown Manhattan between 7th and 8th Avenues from 31st to 33rd Streets, it is situated atop Pennsylvania Station. It is the fourth venue to bear the name "Madison Square Garden"; the first two were located on Madison Square, on East 26th Street and Madison Avenue, with the third Madison Square Garden (1925) further uptown at Eighth Avenue and 50th Street.
WMarina City is a mixed-use residential-commercial building complex in Chicago, Illinois, United States, North America, designed by architect Bertrand Goldberg. The multi-building complex opened between 1963 and 1967 and occupies almost an entire city block on State Street on the north bank of the Chicago River on the Near North Side, directly across from the Loop. Portions of the complex were designated a Chicago Landmark in 2016.
WThe Nardò Ring, originally known as Pista di prova di Nardò della Fiat when it was built in 1975, is a high speed test track located at more than 23 kilometres (14 mi) north-west of the town of Nardò, Italy, in the southern region of Apulia, in the Province of Lecce. It was acquired by Porsche Engineering in 2012 from its former owners, Prototipo SpA. Porsche now call the site Nardò Technical Center.
WPonte City is a skyscraper in the Berea neighbourhood of Johannesburg, South Africa, just next to Hillbrow. It was built in 1975 to a height of 173 m (567.6 ft), making it the tallest residential skyscraper in Africa. The 55-story building is cylindrical, with an open centre allowing additional light into the apartments. The centre space is known as "the core" and rises above an uneven rock floor. When built, Ponte City was seen as an extremely desirable address due to its views over all of Johannesburg and its surroundings. The neon sign on top of the building is the largest sign in the southern hemisphere and advertised for the Coca-Cola Company prior to 2000. It currently advertises the South African mobile phone company Vodacom.
WProkuplje Fortress was a medieval fortified town, located above modern day Prokuplje, Serbia. It is surrounded by Toplica river from three sides.
WProspect Hill Reservoir, also known as Prospect water tower or water tower hill, is a heritage-listed water tower situated in the western suburbs of Sydney, New South Wales, Australia. Built in 1934, the tower is one of the few concrete elevated reservoirs in Sydney that features Egyptian-style doorways and serves the proximate suburban communities.
WA railway roundhouse is a building with a circular or semicircular shape used by railways for servicing and storing locomotives, and traditionally surrounds, or is adjacent to, a turntable.
WRomexpo, also known as Romexpo Dome or Romexpo Town, is a large exhibition center and indoor arena in Bucharest, Romania. It is primarily used for exhibitions, concerts, and sporting events. The complex also hosts more than 140 other exhibits and trade shows every year. It is 303,234 square metres (3,263,980 sq ft), houses 100,000 square metres (1,100,000 sq ft) under roof, spread throughout 11 pavilions.
WThe Rotondes are two railway roundhouses with a diameter of 52 meters and a height of 15 meters, built by the Chemins de Fer Luxembourgeois (CFL), located in Bonnevoie, Luxembourg City.
WThe Rotunda is a cylindrical highrise building in Birmingham, England. The Grade II listed building is 81 metres (266 ft) tall and was completed in 1965. Originally designed to be an office block, by architect James A. Roberts A.R.I.B.A., it was refurbished between 2004 and 2008 by Urban Splash with Glenn Howells who turned it into a residential building, with serviced apartments on 19th and 20th floors. The building was officially reopened on 13 May 2008.
WThe Round Schoolhouse is a historic school building on Grassy Brook Road in Brookline, Vermont. Built in 1822, it is the oldest brick schoolhouse in Windham County, and further distinctive for its round shape. From 1929 to 1989 it served as Brookline's town hall. It was listed on the National Register of Historic Places in 1977.
WThe Royal Albert Hall is a concert hall on the northern edge of South Kensington, London. One of the United Kingdom's most treasured and distinctive buildings, it is held in trust for the nation and managed by a registered charity. It can seat 5,272.
WThe Round Tower, formerly Stellaburgis Hafniens, is a 17th-century tower located in central Copenhagen, Denmark, and one of the many architectural projects of Christian IV of Denmark, built as an astronomical observatory. It is most noted for its equestrian staircase, a 7.5-turn helical corridor leading to the platform at the top, and for the expansive views which it affords over Copenhagen.
WThe Stonehenge is a residential apartment building on Boulevard East in the Woodcliff section of North Bergen, New Jersey in the United States. Situated adjacent to North Hudson Park, the building was constructed in 1967 during a high-rise building spree and at 369 feet (112 m) is among the tallest buildings in the area. The 34-story building has 356 apartments and 5 levels of indoor parking.