I like this picture by Henri Cartier-Bresson. This picture uses the simplicity of a black and white picture and is simple in general. The reflection of the kid in the water gives a really nice effect that attracts viewers to view this picture.
This is a pretty cool photograph that illustrates depth of field. The floor on the top appear to be darker than the lower level floors and the upper level floors also appear to be smaller. It is also a super creative photograph b/c it is a reflection of the street.