This afternoon I saw some amazing tombs, also from the Nguyen dynasty. One of them was also used as a hideaway by the king - not happy with the imperial palace, he has a second palace next to his tomb. The high taxes and forced labour to build it were so detested there was an attempted coup during the building.
The tomb itself is magnificently landscaped, with a huge slab describing the kings life in his own words (in the old Chinese-like characters the Vietnamese used to use). He even says bad things on it about his reign, apparently! How someone, along with his society, can accumulate the power to build things like this is extraordinary, fascinating, and I believe quite wrong.