yes it is, along with the great wall of china and the forbidden city.

Summer Palace is located in the western outskirts of Haidian District, western edge of Beijing between the fourth and fifth ring roads, 15 kilometers from central Beijing

The cause of Beijing's rampant air pollution is from constantly working factories and millions of cars on the roads. Beijing has some of the worst air pollution in the world.

because Beijing was the capital city. btw it wasnt built in Beijing it was built outside of Beijing. every emperor had a garden, or else they thought that they would lose their own will. Empress Cixi built it

they are trying to take cars and lorries of roads but that is not doing anything

that would be kind of impossible, considering there is most likely no roads connected LOL!