The pyramid that took the longest to build was the Great Pyramid. It is believed it took 20 years to build and it is the oldest of the pyramids in Egypt.
the great wall of china
It took 15 years to build the Parthenon. However it took 22,000 tons of marble to build it, not 20,000. Main answer = Parthenon
280 people at any given time.
It depends on what you mean. Tallest: Perdido Regional Host Development, Ursa Platform, & Burj Dubai Post the top 3 of the other categories I can think of:Most Area, Most Mass, Heaviest, Longest, Longest Perimeter, Longest Radius if it is a circle, Longest Side of a structure if it is not a circle.
Construction of the Sydney Harbour Bridge took eight years. It began in 1924 and was completed in 1932.
The Hoover dam weighs 6,600,000 tons. It took 3,250,000 cubic yards of concrete to build the dam itself
the great wall of china
The one that took the longest to build :D
The bridge that took the longest to build was the Qingado Haiwan Bridge. This bridge is located in the country of China. It is twenty six point four miles in length.
Cathedral
The answer is The great Pyramid in Egypt it took over 25 years to build. Just imagine that!!!!!!!!!!
The Cologne Cathedral in Colonge, Germany took 640 years to complete (1248-1880).
The Chartes Cathedral
Milan Cathedral - 579 Years (1386 - 1965)
The longest took about 22 years, for proof I got that off a history book.
It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.It took eight years to build the structure. It was begun in 72 and dedicated in 80. But remember this was the time it took to build the physical structure. It took time to lay out the plans, have them approved/rejected and then gone over again. Also, even though it was open for business in 80, it was not complete. It is said that Titus made an addition (the sources differ) and it is known that Domitian added the awning and an underground passageway for the gladiators during his reign.
Dawes took the longest route
Definitely, it took so many years and millions of people to build it, with no animals or machines!