There are several types of swimming pool designs that you can choose from. They also vary in sizes too. A rectangular pool would look great should your area is very big because it will accommodate vast area of your land. Some would choose an oval or round type design to give it a different look.
Choosing a shape for your swimming pool would depend on the area of the available land that you have in your backyard. There are several shapes to choose from. The most famous shape is rectangular and oval. Though circle shaped pools have been popular to many too. Also the infinite shape where the pool actually look like waves of water trapped in a huge tiled basin.
A pool contractor is best to find first to help design the pool without an overall site plan. The result is that your pool and landscape do not compliment one another, and you lose the opportunity to integrate options that provide more value for the same price.