Start your day by visiting the Temple of Literature, Vietnam's first university and a beautiful example of traditional Vietnamese architecture. Next, head to the Vietnam Museum of Ethnology, where you can learn about the country's diverse ethnic groups and their unique cultures. In the afternoon, visit the Hoa Lo Prison Museum, also known as the 'Hanoi Hilton', which was used to house American prisoners of war during the Vietnam War. End your day with a stroll around Hoan Kiem Lake, a peaceful oasis in the heart of the city.