U Bo is the name of one famous mountain peak. A myth tells that this mountain is the place from where Tran Hung Dao commanded the naval battle against the Chinese Nguyen - Mong aggressors in the 13^th century. On U Bo Peak, visitors can view the entire panorama of Bach Dang River. The silence of the river, the immensity of the sea and the existence of mythical stories, all make this a fascinating area.

Archaeologists have concluded through investigation that Trang Kenh was a jewellery workshop of the ancient people who lived here 4,000 years ago. In more recent times, it was a revolutionary base of Haiphong civil and military forces during the resistance struggle against the French.

Around Trang Kenh, there are some strange caves, including Hang Vua (King's Cave) in Minh Tan Commune. It is thus called due to a myth that Hung Vuong in the centre of the cave, is a lively-looking stone carved statue of him. There are many small tunnels criss-crossing the 18 meter high cave and fresh water streams running through it.