Ha Long Bay, Vietnam Famous for its bright emerald waters and rainforest-topped limestone formations, this ravishing slice of Vietnam feels as wild and Jurassic as it does dreamy and serene. Challenge each other to an adventure with a rock climbing or scuba diving excursion, find your zen with a couples spa treatment, or lay back on the sun-drenched sands to drink in all the breathtaking scenery. Image Source: Getty / Digitaler Lumpensammler