Hanoi is the capital of Vietnam and the second-largest city in the country. It is located in the north of Vietnam, on the Red River Delta. Hanoi is a city with a rich history and culture, dating back over 1,000 years. It is home to many historical landmarks, including the Ho Chi Minh Mausoleum, the Temple of Literature, and the One Pillar Pagoda. Hanoi is also amajor center for education, business, and tourism.

The Đền thờ vua An Dương Vương (Temple of King An Dương Vương) is a significant historical and cultural site located in Cổ Loa, Đông Anh District, Hanoi, Vietnam. This temple is dedicated to An Dương Vương, the founder of the Âu Lạc Kingdom and the builder of the legendary Cổ Loa Citadel.

Khu Du Lịch Sinh Thái Cọ Xanh (Co Xanh Ecotourism)

Di tích Thành Cổ Loa (Co Loa Citadel) is a citadel built near Phong Khe, Dong Anh district, Hanoi, during the end of the Hong Bang Dynasty (about 257 BCE). The fortress is a spiral-shaped complex of the then new capital.