See the breathtaking karst formations of Tam Coc on a scenic journey down the Ngo Dong River during this full-day private bike and boat tour from Hanoi. You’re whisked away by private vehicle to Ninh Binh province for a look at Hoa Lu with a personal guide. See the temples of the ancient royal capital before a bike tour along quiet country roads past fields and small villages. Your boat journey leads you to three limestone caves.