Long-haul flights to international destinations can be taxing on travelers, both on departure and arrival. But the best airports in the world make the travel experience as carefree as possible, often with unusual amenities, such as showers in the bathrooms, entertainment and wellness facilities, and plenty of healthy eating options. Every year for our World’s Best Awards survey, T+L asks readers to weigh in on travel experiences around the globe — to share their opinions on the top hotels, resorts, cities, islands, cruise ships, spas, airlines, and more.