Puerto Vallarta is fifth among the top ten international destinations for US travelers, according to information provided recently by Carlson Wagonlit Travel. Based in Minneapolis, the agency is one of the largest leisure travel agencies in the world. Of the top ten destinations, four of them are in Mexico: Mayan Riviera, Cancún, Puerto Vallarta and Cabo San Lucas. Additionally, cruises along Mexico's Pacific Riviera also ranked among one of the top ten choices.