Swimming pool

A swimming pool, swimming bath, wading pool, paddling pool, or simply pool, is a man-made structure designed to hold water to enable swimming and associated activities. Pools can be built into the ground or built above ground, and may be found as a feature aboard ships. In-ground pools are most commonly constructed from materials such as concrete, natural stone, metal, plastic, composite or fiberglass, and may follow a standardized size, the largest of which is the Olympic-size swimming pool, or be of a custom shape.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY 2.0

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