The term 'Holidays in Hanoi' can be represented by the four-letter word 'TETS'. TETS stands for 'Temple of Literature and Thang Long Imperial Citadel', two of the most popular tourist attractions in Hanoi, Vietnam. The Temple of Literature is a temple dedicated to Confucius and is considered the first university in Vietnam, while the Thang Long Imperial Citadel is a UNESCO World Heritage Site that was once the political center of the Vietnamese Empire. Visiting these two sites is a great way to experience the culture and history of Hanoi during the holidays.