Every big city, needs and surely has a symbol. The megacities have even more symbols.

How must be a symbol of a city? It has to be interesting, historically tight to the city, impressive, easy to describe and, above all, it must have a story!

A symbol of a city can be a building, a statue, a monument, or even a square, or maybe a street. etc. I can give you some examples:

-the symbol is a building: Big Ben or Tower Bridge in London, Tour Eiffel in Paris

-the symbol is a statue: Miss Liberty for New York

-the symbol is a square: Red Square in Moscow, El Zocalo in Mexico City.

-the symbol is a street: Las Ramblas in Barcelona, Champs Elysees in Paris