Tying with the Hawaiian airport in 10th place was also Lukla Airport in Nepal, known for being the gateway to Everest, showcasing unmatched views of the world’s tallest mountain.

This 8-hour route takes you from Zermatt to St. Moritz, crossing 291 bridges and passing through 91 tunnels, all while offering some of the most spectacular mountain views in the world.

Leapfrogging from one key to the next over 42 bridges, the Overseas Highway is an engineering marvel with a railroad past that connects mainland Florida and Key West. But travelers beelining to ...