Da Nang is one of the major port cities in Vietnam (in addition to Ho Chi Minh City and Hanoi) and the biggest city on the South Central Coast of Vietnam; the city is situated on the coast of the South China Sea, at the mouth of the Hàn River.
From the Da Nang Travel Guide
Flying in to SGN want to see Angkor Wat--Doable?
flies. Alternatively, if you remain in Vietnam, you can go to Hue, Da Nang (Hue and Da Nang are closeby and around 964 km from HCMC and Halong Bay (near Hanoi)-764 km from Da Nang. You can travel by train or bus. ...