Discovering the Charismatic Vietnam: 7-day Itinerary

1. Day 1: Explore the Old Quarter of Hanoi
   From Noi Bai International Airport, it takes around 45 minutes (14km) to the Old Quarter.

   Discover the interesting lanes and narrow streets filled with vendors, quaint souvenir shops while relishing the traditional Vietnamese food.

2. Day 2: Majestic Halong Bay
   From Hanoi, a drive of about 3-4 hours will take you to Halong Bay.

   Sail off on a cruise to witness the mesmerizing landscape of Halong Bay. Enjoy kayaking, exploring natural lagoons, and fresh seafood.

3. Day 3: Experience the authentic Hoi An
   A flight from Hanoi to Da Nang will take approximately 1.5 hours and a cab ride to Hoi An about 45 minutes.

   Wander around the ancient town of Hoi An, famous for its Japanese Bridge, tailor shops, and stunning lanterns.

4. Day 4: Nature at its Best in Phong Nha-Ke Bang National Park
   From Hoi An to Phong Nha-Ke Bang National Park, it takes about 5 hours of drive through scenic routes.

   Discover the largest cave systems of the world along with thrilling activities like ziplining, trekking, and cave exploring.

5. Day 5: Escapade in Ho Chi Minh City
   The flight from Dong Hoi Airport to Ho Chi Minh City takes around 1.5 hours.

   Visit the war remnants museum or stroll around the streets, getting lost amidst the chaos of this bustling city.

6. Day 6: Exploring the Chu Chi Tunnels
   From Ho Chi Minh City to Chu Chi Tunnels, it takes roughly 2 hours of drive.

   Immerse yourself in the history and bravery of the Vietnamese Army while exploring the intricate network of tunnels and outdoor exhibits.

7. Day 7: Mekong Delta Waterway
   From Ho Chi Minh City to Mekong Delta, it takes about 2 hours of drive through scenic routes.

   Enjoy the peacefulness of Mekong Delta by taking the local boats and exploring the vast maze of channels. Don't miss out on visiting the coconut candy making factory and trying out fresh fruit.

Time and Costs Estimates

• Entry fee for Halong Bay cruise (6 hours, $120)
• Ticket to Phong Nha-Ke Bang National Park (8 hours, $20)
• Museum entry ticket for war remnants museum (3 hours, $5)
• Chu Chi Tunnel entry ticket (2 hours, $15)
• Total Estimated Costs ($160)

Useful Tips

For a relaxed and comfortable itinerary, you can skip Phong Nha-Ke Bang National Park and explore Hanoi, Halong Bay, Hoi An, and Ho Chi Minh City and still experience the flavor of Vietnam extensively. However, the list doesn't include all the attractions that Vietnam has to offer. Hence, feel free to add or subtract places according to your preferences and the time available.