On September 28, 1542, the Spanish explorer Juan Rodriguez Cabrillo arrives in San Diego Bay while searching for the Strait of Anian, a mythical all-water route across North America.
Cabrillo was not the first to search for a water passage across the North American continent, and he would not be the last. Ever since the voyages of Columbus, Europeans had dreamed of finding a shorter trade route to the Orient. Once it became clear that North America was not India, as Columbus had believed, but an entirely new continent, explorers hoped that an all-water route through the New World might still be found. Vastly underestimating the breadth of the continent, early 16th and 17th century explorers like Cabrillo believed that one such route might be the elusive Strait of Anian, a navigable passage some sailors claimed linked the Pacific with the Gulf of Mexico.