In the following examples, students from a graduating class have worked with two or more vanishing points, drawing from their own photos or their own fantasy.
In the first drawing, a student has constructed a villa with a swimming pool, using two vanishing points, one on the left, one on the right. The shadows really make it look like the sun is shining in this drawing.
The following drawing of skyscrapers with green tinted glass is a bit complicated. The buildings have three vanishing points: one at the bottom left, one at the right a bit outside the frame and one high in the sky. You can find those vanishing points by extend lines between the windows and seeing where they converge. Some lines in the highest skyscraper aren’t drawn very exactly but the idea is clear.
The following wonderful drawing of an imaginary metropolis was made with a lot of patience and fantasy. The two vanishing points are all the way left and right on the edge of the frame. It seems as if we are looking at the city from another high building. For this type of very precise drawings, a slightly harder pencil is useful in the beginning, because you will then get stains less quickly.