Burj Khalifa vs Colosseum

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The Burj Khalifa (Arabic: ??? ?????, Arabic pronunciation: [b?rd?? xa?li?fa]; pronounced English: ), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. With a total height of 829.8 m (2,722 feet, just over half a mile) and a roof height (excluding antenna, but such as a 244 m spire) of 828 m (2,717 feet ), the Burj Khalifa has been the tallest structure and building in the world since its topping out in 2009 (preceded by Taipei 101).Construction of the Burj Khalifa began in 2004, with the exterior finished five decades later in 2009. The principal structure is reinforced concrete. The building was opened in 2010 as part of a new development called Downtown Dubai. It is designed to be the centrepiece of large-scale, mixed-use development. The decision to construct the building relies on the government's decision to diversify from an oil-based economy, and for Dubai to obtain international recognition. The building was originally named Burj Dubai but was renamed in honour of the ruler of Abu Dhabi and president of the United Arab Emirates, Khalifa bin Zayed Al Nahyan; Abu Dhabi and the UAE government lent Dubai money to pay its debts. The building broke numerous height records, including its designation as the tallest building in the world. Burj Khalifa was designed by Adrian Smith, of Skidmore, Owings & Merrill, whose firm designed the Willis Tower and One World Trade Center. Hyder Consulting was selected to be the supervising engineer with NORR Group Consultants International Limited selected to supervise the architecture of this project. The design is derived from the Islamic architecture of the region, such as in the Great Mosque of Samarra.

The Y-shaped tripartite floor geometry is designed to optimize residential and hotel room. A buttressed central core and wings are utilised to support the elevation of the building. Although this design was derived from Tower Palace III, the Burj Khalifa's central center homes all vertical transport with the exception of egress stairs within each of the wings. The structure also offers a cladding system which is designed to withstand Dubai's hot summer temperatures. It comprises a total of 57 elevators and 8 escalators. At a particular stage in the architectural and engineering process, the original Emaar programmers experienced financial problems, and required more money and financial funding. Sheikh Khalifa, the ruler of the United Arab Emirates, granted monetary aid and financing, hence resulting in the changing of the name to'Burj Khalifa'. The concept of profitability derived from creating high density developments and malls around the landmark have proven effective. Its surrounding malls, hotels and condos in Downtown Dubai have generated the most revenue from the project as a whole, while the Burj Khalifa itself made little or no profit.Critical reception to Burj Khalifa has been generally positive, and the building has received many awards. However, there were numerous complaints regarding migrant workers from South Asia who were the key building labor force. These centered on low wages and the practice of confiscating passports until duties were complete. Several suicides were reported.

Source: Wikipedia

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The Colosseum ( KOL-?-SEE-?m), also known as the Flavian Amphitheatre (Latin: Amphitheatrum Flavium; Italian: Anfiteatro Flavio [a?fite?a?tro ?fla?vjo] or Colosseo [kolos?s??o]), is an oval amphitheatre in the middle of the city of Rome, Italy. Constructed of travertine limestone, tuff (volcanic rock), and brick-faced concrete, it was the largest amphitheatre ever constructed at the time and held 50,000 to 80,000 spectators. The Colosseum is just east of the Roman Forum. Construction started under the emperor Vespasian in AD 72 and was completed in AD 80 beneath his successor and heir, Titus. Further modifications were made during the reign of Domitian (81--96). These three emperors are known as the Flavian dynasty, and the amphitheatre was named in Latin because of its association with their family name (Flavius). The Colosseum could hold an estimated 50,000 to 80,000 spectators at various points of its history over the centuries, having a typical audience of some 65,000; it was used for gladiatorial contests and public spectacles such as mock sea battles (for only a short time as the hypogeum was soon filled in with mechanisms to support the other activities), animal hunts, executions, re-enactments of famous battles, and dramas based on mythology. The building ceased to be used for entertainment in the early medieval age. It was later reused for such functions as housing, workshops, quarters for a religious order, a fortress, a quarry, and a Christian shrine.Although substantially destroyed because of earthquakes and stone-robbers, the Colosseum is still an iconic symbol of Imperial Rome and is recorded among the New7Wonders of the World. It's one of Rome's most popular tourist attractions and also has connections to the Roman Catholic Church, as each Good Friday the Pope leads a torchlit'Way of the Cross' procession that starts in the region around the Colosseum.The Colosseum is also portrayed on the Italian version of the five-cent euro coin.

Source: Wikipedia