There’s a village on the south coast of Upolu island in Samoa by the name of Lotofaga. Located in that village is To Sua Ocean Trench, one of these rare heavens to exist on Earth. To Sua (or ‘big hole’) is an actual big hole converted into a swimming area. The decor is pure and you’ll find yourself surrounded with beautiful colorful gardens. A 30m ladder is installed giving you access to water. You’ll then be able to relax and swim through the massive cave within To Sua Ocean Trench. There is a fee upon entrance ($6-$15) but this whole experience is priceless.