Hanoi is Vietnam's historic and vibrant capital, and it is known for the various rivers, lakes, and mountains that run beside and around it. Scattered around are tourist attractions that are very appealing because of the lush regions full of streams, rivers, and mountains, such as Tam … Hanoi is Vietnam's historic and vibrant capital, and it is known for the various rivers, lakes, and mountains that run beside and around it. Scattered around are tourist attractions that are very appealing because of the lush regions full of streams, rivers, and mountains, such as Tam Dao, Con Son, Kiep Bac, and so on. It has mostly recovered from decades of conflict and is currently experiencing a development boom, making it a fast-expanding metropolis in Southeast Asia.