Most airports are surrounded by highways, fields or cityscapes. But in some parts of the world, runways sit on narrow islands, reclaimed land or right beside the sea because coastal regions often have little flat land to build on. Princess Juliana International Airport, Sint MaartenPerhaps the world’s most famous coastal airport, Princess Juliana International Airport is known for its dramatic approaches over Maho Beach. Watching the landings has become one of the Caribbean island’s biggest tourist attractions. However, authorities warn visitors to stay behind safety barriers, as the powerful jet blast from departing aircraft can be dangerous.