At the Tombs of the Emperors temple complex, just south of Hue on the Perfume River, has some fantastic temples offering exquisite detail. If you find yourself in Hue, taking the very interesting, albeit touristy, cruise down the Perfume River is a must.
Hue is the former capital of Vietnam, situated nearly in the center of the country. It is an easy city to get a hang of, split down the middle by the Perfume River, boarded by an appealing boardwalk. The weather is infamously bad, with the Truong Son Mountains seeming to bring in frequent drizzle, but it is a relatively pleasant town with inexpensive lodging, good restaurants, and lots of sightseeing opportunities.