San Alfonso del Mar, a huge swimming pool in Chile, is worth to be one place to spend holidays. It is acknowledged as the largest swimming pool on the earth by Guinness World’s Records with about 1 kilometers long and up to 35 metres deep. Visitors are even able to sail on the deep, quiet water of the swimming pool by boat. As the largest saltwater swimming pool in the world, San Alfonso del Mar invites people all over the world to visit it. More >