Which explorer traveled through the Western U.S. in search of the seven cities of gold?

The explorer who traveled through the Western U.S. in search of the legendary Seven Cities of Gold was Francisco Vázquez de Coronado. In the mid-16th century, he led an expedition from Mexico into present-day southwestern United States, exploring areas that include parts of Texas, New Mexico, Arizona, and Kansas. Coronado's journey was fueled by tales of immense wealth and riches, but he ultimately found no gold, only vast landscapes and native cultures.