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Quick Facts:

Main architect:

- General Brehon B. Somervell.

 

Constructed:

- Between 1941-1943.

 

Function:

- House the US Department of Defence.

 

Active:

- Yes.

 

Today:

- One of the largest office buildings in the world.

 

 

 

 

 

 

Traveler reviews:

 

My group had booked a tour to Pentagon in advance. Apparently, this is the only way to gain access to the building itself. The guide was very informative and we all enjoyed it. However, if you plan to take the tour, don’t bring a lot of items with you. Many things are restricted and you can be forced to stay outside.   

                                       

- Julie F.

 

 

As I was running short on time, I did not take the tour of the inside of the Pentagon, but chose to visit the memorial instead. The 9/11 memorial was very beautiful. It is full of symbolism where each one of the benches that makes up the memorial symbolizes one of the victims of the attack

                                         

- KRA.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Pentagon, Washington

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Pentagon history

 

 

The history of the Pentagon dates back to mid 20th century. The area used to be nothing but wasteland and dumps. It was in 1941, shortly before the US entry into the Second World War, that the decision to construct a building which gathered all Defense personnel in one building was taken.

 

 

An extraordinary need

At the time, the War Department work force numbered more than 24,000 people, housed in 17 different buildings. Needless to say, the new building would have to be huge in order to fit all these people into one single building.

 

The guidelines given was also not to provide office for the current 24,000 employees, but to have a maximum capacity of 40,000 while at the same time keeping the building less than six stories high.

 

 

A pentagonal building

This, not so easy task, was solved by Engineer officer General Brehon B. Somervell and his two subordinates, who together proposed a five-sided building design. This shape is commonly known as a pentagonal shape, which has given the building its name. The construction started right away with 41,000 concrete piles and 5,5 million cubic yards of earth forming the foundation of the building.

 

 

Construction

The construction process went incredibly fast and the building stood completed in January 1943, only 16 months after the start of the construction. A normal time period for a project of this magnitude was around four years. In total, around 4,000 men were working the building in three shifts, which explains the remarkably fast completion of the building.

 

Visitors looking at the outside of the Pentagon will see that it is rather stripped of details and other ornamentation. This is a choice the designers made, as they wanted to minimize or avoid using critical war materials when possible.  For example, they used concrete drainpipes rather than metal and they eliminated bronze doors and copper ornaments.

 

 

Innovative design

The building might look like a big block, but the fact is the Pentagon is built as five pentagonal rings, with space in between each ring to allow sunlight into the building. In the middle of the Pentagon you can even find a small park.

 

 

9/11 attacks

Exactly 60 years after the initial construction of the Pentagon, the September 11 attacks occurred, in which American Airlines Flight 77 crashed into the west side of the building. The flight penetrated three of the five pentagonal rings, killing a total of 184 people. Luckily, the area hit by the plane was undergoing renovations, which left several offices unoccupied. Otherwise the death toll would likely have been even higher.

 

 

The Phoenix Project

After the attacks, a massive project was initiated with the task of rebuilding the damaged sections within one year. It was named the “Phoenix Project” with reference to the mythological Phoenix bird, which always rises from the ashes.

 

The 9/11 attacks also lead to the construction of the Pentagon Memorial.  The construction of this memorial began in 2006 and was dedicated on September 11, 2008.

 

 

 

Why visit Pentagon ?

 

The Pentagon is headquarters of the Department of Defense and one of the world’s largest office buildings. It has about three times the floor space of the Empire State Building, which gives you an indication of its enormous size.

 

 

Absolutely massive

Today, the Pentagon is almost as a city in itself. It has more than 20.000 employees and parking lots for over 8.000 cars. While in the building, they tell time by 4,200 clocks, drink from 691 water fountains and can utilize any of the 284 rest rooms.

 

Even though the building was constructed during the early years of World War II, it is still thought of as one of the most efficient office buildings in the world. Despite its enormous size, it only takes around seven minutes to walk between any two points in the building.

 

Getting an in depth look of the inside of the Pentagon can be hard if you haven’t booked a time in advance.

 

 

The Pentagon Memorial

The memorial built after the 9/11 attacks contains 184 benches, one for each victim of the attack, arranged in order of the year of birth of each individual. Each bench also carries the name of a victim with a small pool of water under it.

 

Visitors paying extra attention will see that some of the benches points towards the Pentagon while others point away. This is no coincidence, but symbolizes whether or not the victim was inside the plane or at the Pentagon.

 

The benches for the 59 victims on board the plane are arranged so that someone reading the name on the end of the bench will face the sky where the plane came from. The 125 benches for the victims inside the Pentagon face the opposite direction, so someone reading the name will look up and see the façade of the Pentagon where the jet hit that day.

 

 

 

Pentagon location

 

The Pentagon is located in eastern United States. It lies situated on the old Potomac River floodplains in Arlington County, next to Washington D.C. For the exact location of the Pentagon, check out the location map to the right!

 

 

Pentagon resources

 

pentagon wall

The Pentagon. creative commons Erik Charlton.

pentagon aerial view

Aerial view of the Pentagon. (public domain)

pentagon flag

US flag at the Pentagon. (public domain)

Pentagon Memorial

The Pentagon Memorial. creative commons NCinDC.

Pentagon Memorial bench

The illuminated benches. creative commons marabuchi.

Pentagon Memorial bench

US Air Force Memorial in the back. creative commons marabuchi.

Pentagon Memorial bench

The Pentagon Memorial. creative commons marabuchi.

Pentagon Memorial

The Pentagon Memorial benches. creative commons NCinDC.

Interactive location map. For a larger and more detailed map, check out our US map.

 

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