This largest island of Mexico is surrounded by turquoise waters and coral reefs. The sand and sea seem to be the source of health and tranquility here. If you love to shop, Cozumel is a great source of Mexican handicrafts and silver artifacts. Below the surface of the sea is some of the most incredible diving in the world. The famous Palancar Reef is a coral cathedral with some of the most colorful fish you’ll ever see.