Gateway to the Galápagos Islands, the revitalized riverfront port of Guayaquil is Ecuador's largest city — beating out its political and cultural rival, Quito — and the country's economic engine. For years, it was plagued by rampant crime, but a series of public safety campaigns and impressive urban renewal projects have cleaned up the city. Long just a necessary layover en route to the Galápagos, vibrant Guayaquil now gives travelers plenty of reasons to stick around and explore.