You’ve undoubtedly seen jaw-dropping photos of Ha Long Bay, Vietnam on social media. This UNESCO World Heritage Site features stunning limestone islands, dripping with greenery and jutting majestically out of the Gulf of Tonkin. It’s one of the most visited tourist attractions in Vietnam and rightfully so—it’s unbelievably beautiful. However, it’s also unfortunately known for being crowded, overpriced, and incredibly dirty. But, lucky for you, Lan Ha Bay, its neighbor to the southwest, is equally as gorgeous, with 400 limestone islands spread across its 30 square miles, and is more reasonably priced, cleaner and WAY less busy than its more popular sister. So if you want to experience those spectacular limestone karsts and spectacularly colored waters, without all the crowds, here’s everything you need to know about visiting Lan Ha Bay.