19. Hong Kong
Asia’s most cosmopolitan city continues to push the design envelope, reaching literal new heights with developments like the Ritz-Carlton, the world’s tallest hotel, and fashion-forward boutiques in the gentrifying Sheung Wan neighborhood. Hong Kong’s superb public transportation system, cheap taxis, and bilingual signage make it a cinch to navigate. You can also find glimpses of old-world tranquility: incense-wreathed Taoist temples; polished hotel lobbies serving afternoon tea; remote walking trails; and graceful tai-chi practitioners in tidy city parks. So remember to slow down every now and then.