"Sitting on the border between Italy and Switzerland, this famously jagged Alpine peak earned the No. 4 spot with just over 1 million combined social-media posts, reflecting its enduring status as an iconic, highly photographed mountain." - Stacey Leasca Stacey Leasca Stacey Leasca is an award-winning journalist and co-founder of Be a Travel Writer, an online course for the next generation of travel journalists. Her photos, videos, and words have appeared in print or online for Travel + Leisure, Time, Los Angeles Times, Glamour, and many more. You'll usually find her in an airport. If you do see her there, please say hello. Travel + Leisure Editorial Guidelines