Overview:Travel the America to explore four of the world's most beautiful National Parks. Cruise the icy waters of Alaska's glittering Glacier Bay and see whales breaching, eagles soaring, glaciers thundering into the sea! Wander through lush green Corcoavdo, Costa Rica's enchanting rainforest, amid gorgeous scarlet macaws and spider monkeys. Journey to Canada's majestic Banff National Park to enjoy brilliant turquoise Lake Louise nestled beneath the soaring Rockies. Behold Arizona's awe-inspiring Grand Canyon - so magnificent it's been called "an amphitheater fit for the gods!"