Begin your honeymoon by immersing yourself in the bustling Old Quarter of Hanoi, the capital city of Vietnam. Visit the Temple of Literature, a temple of Confucius that is also considered one of the country's first national universities. Then, explore the iconic Hanoi Opera House, a century-old French colonial landmark. End the day with an evening walk by the Hoan Kiem Lake, also known as "Lake of the Restored Sword".
Take a day trip to Halong Bay, a UNESCO World Heritage site known for its breathtaking scenery of thousands of limestone islands and islets. Enjoy a romantic cruise through the bay and have a freshly caught seafood lunch on board. After returning to Hanoi, take a late afternoon flight to Nha Trang, where pristine beaches await you two for a day of relaxation.
Experience the beautiful beach and stunning diving spots in Nha Trang. Take a walk to one of the main attractions, the Po Nagar Cham Towers, which is a temple complex built by the Cham people, a minority group in central Vietnam. Then, lounge on the sand or have fun with various water sports on the beach for the rest of the day.
Take an early morning flight to Ho Chi Minh City, the commercial and cultural center of Vietnam. Start your exploration by visiting the iconic Notre-Dame Cathedral Basilica of Saigon and the Central Post Office, which are both French colonial architecture landmarks. Then, get a taste of history by learning about the Vietnam War at the War Remnants Museum. End the day with some shopping at the famous Bến Thành Market.
If you have more time in Nha Trang, consider taking a day trip to the Ba Ho Waterfall or the Vinpearl Land Amusement Park for some extra adventure. Alternatively, if you have less time overall, you could combine Day 1 and Day 4 by taking an early morning flight to Ho Chi Minh City and explore the city first before flying to Hanoi in the evening to end your honeymoon there. Happy travels!