Photo credit: CC license by US Geological Survey
8. Great Blue Hole – Belize
The Great Blue Hole is located off the coast of Belize and is what is known as a submarine sink hole. The hole is almost 1000 ft. wide and 410 ft. deep and is one of the most incredible sights on Earth. It was formed over thousands of years by quaternary glaciation. Many people come here to dive in some of the most beautiful water on Earth.