9. Riviera Nayarit, Mexico

Even couples who've travelled to Mexico many times have likely not been to Riviera Nayarit, a short drive north but seemingly a world away from the bustle of popular Puerto Vallarta. Stretching 100 miles along the Pacific Coast from Nuevo Vallarta in the south to San Blas in the north, the region is the home of all-inclusive megaresorts to tiny boutique hotels and everything in between. Depending on preference, a couple might choose to begin their lives in the laid-back surfer enclave of Sayulita or at one of Punta Mita's ultra-luxe beachfront resorts, like the St. Regis Punta Mita.