Associated Press Uber has released a list of 15 countries that US tourists took the most international trips to. The list is topped by Mexico and includes six European countries, such as the Netherlands. Visit BusinessInsider.com for more stories. Uber has released a list of 15 countries that US tourists took the most international trips to, with neighboring Mexico topping the list. The ride-hailing company used its own rider data to compile the list in its "A look back at 2019" report.