The number Ï is a mathematical constant, the ratio of a circle 's circumference to its diameter, commonly approximated as 3.14159. It has been represented by the Greek letter  Ï  since the mid-18th century, though it is also sometimes spelled out as  pi  (/paÉª/). Being an irrational number, Ï cannot be expressed exactly as a fraction (equivalently, its decimal representation never ends and never settles into a permanent repeating pattern).
Paris, France is also known under the nicknames: The City of Lights The City of Love = The City od Love and Lights It is called these names because of the view from the eiffi â¦ el tower which is so romantic and you can see a view of everything that is lite at night while overlooking the eiffiel tower.
The city is renowned for the beauty of its setting, its architecture, and its artwork. The city in its entirety is listed as a World Heritage Site, along with its lagoon. Venice has been known as the La Dominante, Serenissima, Queen of the Adriatic, City of Water, City of Masks, City of Bridges, The Floating City, and City of Canals. It has also been described as being one of Europe's most romantic cities. It is truly an amazing, stunning and interesting city for the adventurous to explore!