In-ground swimming pools usually come in three varieties: concrete (with a range of finishes), vinyl-lined, and fiberglass.
Inground swimming pools are more expensive than above-ground, but they are also an enduring home perfection. They add aesthetic, as well as intrinsic, value to your home. And if it comes time to sell your house, an inground swimming pool is in general more attractive to probable buyers.
In-grounds range from play pools with depths of 3-to-5 feet to diving pools with deeper depths suitable for the divers in your family. Before you acquire an in-ground swimming pool, you need to consider how your family will use it. Do they like to play a lot of water sports? Then maybe a play pool with sport set-ups will fit you best. Do they like to swim laps? Possibly a rectangular design pool is best for you. Or do you have a mixture of swimmers and splashers?
Then how about an L-shaped pool so everyone will be pleased? Thinking about usage and then designing with those needs in mind is the key to building a pool that your whole family will be happy with for years to come.