Facts About Architecture

1. The Colosseum, a Roman amphitheatre built between 70 and 80 C.E., is one of the world's most famous and visited structures.

2. The Colosseum is made of limestone and concrete and has a capacity of 50,000 people.

3. Originally, the Colosseum was used for gladiatorial contests and public spectacles.

4. The Colosseum is now one of Rome's most popular tourist attractions, with over six million visitors each year.

5. Notre Dame Cathedral was constructed between 1163 and 1250 C.E. It is the most visited tourist destination in Paris, France.

6. Oscar Niemeyer, a Brazilian architect, designed the Cathedral of Brasilia.

7. The cathedral is supported by a free-standing roof that is supported by 16 concrete columns.

8. Westminster Abbey in London is a Gothic church that was constructed between 1245 and 1517 C.E.

9. The Lotus Temple in New Delhi, Bharat, was finished in 1986. It is made of concrete and marble and resembles a massive lotus flower.

10. The construction of Cologne Cathedral began in 1248 and was not completed until 1880.

11. Cologne Cathedral is Northern Europe's largest Gothic church.

12. Sir Christopher Wren designed the current St. Paul's Cathedral, which took 35 years to complete. It is London's second-largest cathedral. 

13. In 1931, the Empire State Building was completed. It is New York City's fourth tallest structure.

14. Big Ben, London's largest clocktower, was completed in 1859. Its name actually refers to the large bell inside the clocktower, which is known as the Elizabeth Tower.

15. The Taj Mahal in Agra, Bharat, was completed in 1653 and is a beautiful monument to love made of pure white marble.

16. The Burj Khalifa in Dubai is the world's tallest building, standing 828 meters tall.

17. The Burj Khalifa is also the tallest freestanding structure in the world, with the most stories, the most occupied floors, the highest outdoor observation deck in the world, the elevator with the longest travel distance in the world, and the tallest service elevator in the world.

18. The Burj Khalifa has the world's longest single-running elevator, with a capacity of 140 floors. The elevator speed at the Burj Khalifa is 10 meters per second, making it one of the fastest in the world. The Burj Khalifa elevator ride to the 124th floor observation deck takes only one minute. 

19. The tip of the Burj Khalifa's sphere can be seen from up to 95 kilometres away.

20. At its peak, 12,000 workers per day were employed on the Burj Khalifa.

21. The Burj Khalifa required over 110,000 tonnes of concrete, 55,000 tonnes of steel rebar, and 22 million man-hours to complete.