The large park surrounding Ho Chi Minh's mausoleum, after a quick and slightly lax security check, begins with a walk down the biggest boulevard EVER. In fact, it was so big, and the fact that the Mausoleum was shrouded in a light haze, made it look like a painted maquette in an old-fashioned movie! Behind the mausoleum, there is a much more to see, but DON'T WALK ON THE SIDEWALKS! You WILL get whistled at by the guards - there is no one allowed too close to the mausoleum, and the guards let you know that!
Since the mausuleum is only open in the mornings, we instead wandered through the complex area, filled with gardens and temples, and a rather large museum(also closed). We found a more relaxed area surrounding the one pillar pagoda, which actually IS on one pillar. There are several vendors here, provinding all manners f snacks, but my favorite was the fresh fruit vendor. There are plenty of benches in the shade, so it's also a good place to relax. There are washrooms and souvenir vendors in this area, too. It's a nice place to wander for a few hours, but not more than that, especially after opening hours.