The Arc de Triomphe is closed in the morning of July 14th. For the national day, troops gather in the surrounding avenues (Grande-Armée and Foch especially) where the French president will review them, before the parade on the Champs-Elysées. No public is allowed in the monument until the ceremony ends at noon.
The two main events which happened at the Arc in 1919 are: - on July 14, the "défilé de la victoire" (the victory parade) was a huge event as the first parade after the end of the war; - on August 7, the aviator Charles Godefroy flew his plane under the arc. It was kind of a revenge as aviators had to participate on foot to the victory parade, and were forbidden to fly their planes.
The tomb of the unknown soldier (see related question) of WWI is located at the foot of the Arc, facing the Champs-Elysees avenue. On may 8, July 14, and Nov. 11, the French president lays a wreath of flowers here. It is also the traditional first visit and ceremony organised for visiting heads of states when they are invited in Paris.
Bastille Day happens in summer, as it is July 14.
1,732,280 people visited the Arc in 2012. The Arc is closed on New Year, May 1st, Dec. 25 and during ceremonies involving the French President (May 8, July 14, Nov. 11). That gives an average of 4,820 people daily, making the Arc the 8th most visited Parisian monument for 2012. The total number of visitors since the origin is ... well I was unable to find it, but it had tens of millions visitors, based on the annual visits (1.3 million in 2000, 1.5 million in 2010...)
Open every day:1 April to 30 September : 10 am to 11 pm1 October to 31 March : 10 am to 10:30 pmLast admission 45 mins before closingClosed January 1, May 1, May 8 (morning), July 14 (morning), November 11 (morning) and December 25.
The arc is: 19.06 units
(14/84) x 360° = 60°
Arc of the Testimony was created on 1997-10-14.
Noah's Arc - 2004 is rated/received certificates of: USA:TV-14
Length of arc = angle (in radians)*radius = (pi/4)*14 = 10.996 cm
Watch What Happens Live - 2009 Curtis Stone and Kathy Najimy 7-14 was released on: USA: 11 July 2012
July 14 ,1986