Fodor's Expert Review Monumento Natural Isla Cachagua

This 4.5-hectare protected island off the coast of Cachagua, a few miles south of Zapallar, is one of the world's most important Humboldt penguin breeding grounds. No one is allowed on the island, but you can see it from the beach below Cachagua, though you need binoculars to watch the penguins wobble around. For a closer look, hire a boat at the Caleta de Zapallar.