plunging highland valleys, tiers of rice paddies and soaring limestone mountains. Anything is possible, from half-day hikes to assaults on the lofty Fansipan, Vietnam’s highest mountain. Even if you’re somewhere like An Bang Beach near Hoi An, you can stroll along the sands for an hour or two and experience a near-pristine coastal environment. Generally northern Vietnam is your best hiking bet: its dramatic mountain paths and fascinating minority culture are a huge draw. Elsewhere, national parks and nature reserves have established trails (and usually guides available to keep you on them).