...Puerta del Sol is the exact centre both of Madrid and of Spain?
...Madrid is supposed to have the best Japanese food outside of Japan?
...Madrid’s metro system belongs to biggest in the world?
...it is likely possible to find oneself in a traffic jam at 4 o’clock in the morning?
...in Madrid there is sold and bought as much seafood as in the cities which are located on the ocean?
...in the quarter around Plaza Santa Ana there are more bars than in Norway?
...on the bells there are no surnames but the number of the floor?
...I've eaten the best chocolate cake ever there?

/edit/
...driving on a snowy highway without chains is not as much fun as it seems to be?