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The Coliseum Started: Circa A.D. 70 – Completed: Circa A.D. 80 – Duration: 10 years
9. Parthenon Started: Circa 447 B.C. – Completed: Circa 430 B.C. – Duration: 17 years
The Great Pyramid of Giza Started: Circa 2,580 B.C. – Completed: Circa 2,560 B.C. – Duration: 20 years
Sacsayhuamán Started: Circa A.D. 1445 – Completed: Circa A.D. 1508 – Duration: 63 year
York Minster Cathedral Started: A.D.1220 – Completed: A.D. 1472 Duration: 252 years
Petra Started: Circa 600 B.C. – Completed: Circa A.D. 250 – Duration: 450 years
Chicken Itza Started: Circa A.D. 600 – Completed: Circa A.D. 1000 – Duration: 400 years
Angkor Wat Started: Circa A.D. 802 – Completed: Circa A.D. 1220 – Duration: 418 years
Stonehenge Started: Circa 3100 B.C. – Completed: Circa 1500 B.C. – Duration: 1,600 years
The Great Wall Started: Circa 400 B.C. – Completed: Circa A.D. 1600 – Duration: 2,000 year
It took 30 years to build the Washington Monument. It was finished in 1884 but it didn't open until 1888.
This is a very famous Roman structure. It is well known to be the location where the legendary gladiators would fight. The coliseum took 10 years to finish. Construction began in AD 70 and ended in AD 80. Its original purpose was to be a venue for celebrating military victories. According to experts, the venue could hold a crowd of between 50,000 and 80,000. It stood more than 620 feet long and 157 feet high. It also had tunnels under the arena, arches, elevators and hydraulic systems. It was an engineering feat of excellence.
Few other temples are as famous as this Grecian one. Construction of this temple began in 5 BC and ended at around 12 AD. It took 17 years for it to be completed. It was constructed to honor the goddess Athena. Moreover, all its proportions were measured according to the Golden Ratio. This was so that the Parthenon would be a perfect, beautiful building. It is built upon the Acropolis hill above the city of Athens.
This is one of the most beautiful yet curious structures today. Located in Pisa, the leaning tower took 199 years to be completed. It was designed by Bonnano Pisano and he wanted it to be straight. However, today it leans 3.99 degrees. It has a collection of 297 steps that lead from the bottom to the top.
Located in Vatican City, Rome, this is one of the most impressive church buildings in the world. It took a total of 144 years to build. In the 4th century, Emperor Constantine commissioned its construction. Within its walls, you can find the murals painted in the ceiling of the Sistine Chapel by Michelangelo as well as 100 tombs under the basilica.
Located in the Egyptian desert, this is the greatest pyramid in the country and one of the most impressive buildings in the world. Construction of this mammoth building began in 2,580 BC and ended in 2,560 BC. For 20 years, slave laborers and the most intelligent engineers of the time labored to build this pyramid for pharaoh Khufu. Not only is it one of the tallest structures in the world, the Great Pyramid of Giza and the two neighboring pyramids match a star formation right above them. The accuracy is with in millimeters.
Located in Cuzco, Peru, this is a building constructed by the ancient Incan Empire. It took them a total of 63 years to complete it. Their architecture is marvelous. They did not use any mortar to join up the building blocks. Instead, they carved the blocks such that they interlocked very tight. Considering the technology of the time, Sacsayhuaman is an engineering marvel.
Moscow is the capital city of Russia. It is also the home of this colorful cathedral. Its construction began in the year 1555 and the cathedral took 123 years to complete. It was ordered to be built by Ivan the Terrible. Many know St. Basil's Cathedral for its colorful minarets all over the cathedral complex. It was designed by architects known as Barma and Postnik.