The benefits of coloring books for kids cannot be overestimated. It's not just entertainment, which can permanently keep the child interested, but also gives some free time for parents to make all necessary household chores; it is also an excellent developing material. Combining a game and a hobby such «coloring pages» will help improve the child's imagination, develop creative skills, visual memory and fine motor skills that will prepare a child's hand for the writing skills.
There are rare instances of contour drawings of famous architectural structures and monuments with a variety of parts made in a realistic manner. Such coloring is complex to implement and is designed for adults.