Two points perspectives are the most common perspectives in drawing techniques. It gives you a tree-dimentional effect of how the building or the object will look like. That's why this technique is used by many architects an designers.
A 2-points perspective begins from 2 points on the horizon (the long horizontal line in the middle). Two points are chosen, one on the left of the horizon and one on the right of the horizon. All drawn lines will start from one of these 2 points to make the perspective view of an object like a building.
|2 points perspective of a simplistic building|