Up until recently, Y-40 Deep Joy, in Hotel Millepini, near Venice, Italy was known as the world's deepest swimming pool due to its 42-meter depth.

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Deep in the Chihuahuan desert of west Texas sits a massive outdoor swimming pool that may be the largest swimming pool of its kind in the world.

COWLITZ INDIAN RESERVATION — Clark County kiddos made a big splash Thursday at ilani hotel’s pool for the 16th annual World’s Largest Swimming Lesson.