My favourite picture is "The scream" by Edvard Munch.
It represents the expressionistic trend in the end of XIX century.
In the center of the picture there is a mysterious figure-a man screaming. He stands on a lond pier. Behind him we can see shapes of other people and a sea. All is in vibrant colours-dark blue and vivid orange, which gives the feeling of anxiety.
Also the dynamic composition of the picture reflects numerous emotions of the man screaming.
I love the picture, because with simple shapes and colours it provokes a lot of feelings and gives you the sense of feeling unease.
It's probably one of the best known pictures in the world.