'The vestiges of the Imperial Citadel of Thang Long in Hanoi were revealed in the early years of the 21st century, which quickly attracted the attention of domestic and international experts, scientists. Nearly a decade after the revelation, Thang Long Citadel relics area has been recognized by the United Nations Educational, Scientific and Cultural Organization (UNESCO) as the World Cultural Heritage on the 1000th anniversary of Thang Long Hanoi (2010). The authors of this book offer the latest historical research based on the results of excavation of monuments. The book is edited by Professor Andrew Hardy (EFEO) and archaeologist Dr. Nguyen Tien Dong (Institute of Archeology), includes many authentic materials, scientific analyzes, judgments, images taken from the excavation scene.