Welcome to Gatun Lake, the massive freshwater heart of the Panama Canal. Here, you can take a boat out on the water and cruise alongside the giant ships making their way across the isthmus—it's a truly unique view you won't get anywhere else. Keep your eyes peeled for the residents of the rainforest islands; you're likely to spot capuchin monkeys, hear the calls of howler monkeys, and see crocodiles sunning themselves on the banks. It’s an easy, relaxing way to experience the incredible nature and engineering that coexist here.