In 2012, 250,000 visitors were recorded. Many have been attracted since the Amazon rainforest was ranked as one of the Seven Natural Wonders of the World. Iquitos inaugurated international flights to the main hub of Panama City in 2012, with shared destinations with Miami and Cancún. Its international airport is expected to become one of six international air centers of Peru. The city was ranked as sixth on the list of "10 leading cities in 2011" of the "Lonely Planet" guidebook.