Hue used to be the capital city, but was largely demolished in the war. I didn’t think much of Hue, and only stayed a few days, but I did tour the Demilitarized Zone (DMZ). There’s almost nothing left there–the tour took on a degree of the surreal at times, as an “American army base” listed on the tour itinerary turned out to be a single rusty tank by the wayside. Scavengers have taken away almost all the metal.
Hue is actually spelled with an accent over the e, and is pronounced roughly “Whey”.

I laughed my head off on seeing this. This stop was labeled "Pile of Rocks" on our itinerary, which was funny enough in itself--hey, we're going to see a pile of rocks!--but it turns out there isn't even a pile of rocks!
In general, there isn't much left to see in the DMZ, but this was particularly funny. (The pile of rocks, by the way, was used by the U.S. as a lookout point during the war.)