Start your trip in the bustling city of Ho Chi Minh. Visit the Notre Dame Cathedral and the Saigon Central Post Office, learn about the country's history at the War Remnants Museum and then relax at the Bitexco Financial Tower Skydeck with sweeping views of the city's skyline.
Head to the heart of the Mekong Delta and walk along the Ninh Kieu Pier watching the boats come in and out. Take a boat ride to the Cai Rang Floating Market, a colorful and lively market that will give you a glimpse of the local life. Visit the Bang Lang Stork Sanctuary to see thousands of storks, egrets, and herons.
Explore the vibrant coastal city of Da Nang and visit the Dragon Bridge, a symbol of this young city and a beautiful sight when lit at night. Walk along the My Khe Beach and enjoy sunset views from the Son Tra Peninsula. Visit the Lady Buddha statue standing at 67 meters on the Linh Ung Pagoda compound's highest position. With her hand facing out over the sea, she's also called the goddess of the ocean.
Hoi An Ancient Town might be the most charming city in all of Vietnam. Explore the Tan Ky Old House, the Bridge Pagoda, and the Hoi An Museum of History and Culture to immerse yourself in the local culture and traditions. Take a cooking class and learn how to make authentic Vietnamese spring rolls.
End your honeymoon with a visit to one of Vietnam's best-kept secrets: the Phong Nha-Ke Bang National Park. Take a guided tour of the Paradise Cave, one of the most beautiful caves in the world, to see impressive stalactites and stalagmites. Go on a boat ride through the Phong Nha Cave, which has an underground river running through it.
If you have more time, visit the Cu Chi Tunnels or the Mekong Delta floating market. If you have less time, consider skipping Da Nang and heading directly to Hoi An. Keep in mind that weather in Vietnam can be unpredictable, so plan accordingly and bring a lightweight rain jacket.