One-point perspective is when only one vanishing point exists. Lines radiate outwardly from this point, and perpendicular lines meet a this point. One-point perspective is the same as parallel perspective. All of these paintings have vanishing points in the center of the artwork with all orthogonals going through this point. Every painting depicts a Renaissance city scene either with or without people. They consist of straight lines on the floor and to outline the buildings, then designs are adding with curved lines. The use of color helps to enhance features. This is easy to see because Perspective Scenery looks really dull and bland due to the use of only brown.