Vietnam: Explore the Roads Less Taken 1. Ha Giang Loop – Untamed Adventure Trade touristy Sapa for the rugged beauty of Ha Giang. Motorbike your way through jaw-dropping mountain passes and colorful tribal villages—pure, untouched Vietnam. 2. Phong Nha – Land of Hidden Caves Home to the world's largest cave, Son Doong, this lush region invites explorers to d...