Any one has ever been here or seen this monument ? I need a detailed account on how to go there?

hoi an is VERY small, you can walk around the town 3 times in one day.. if you go , if there is such a monument , just ask anyone on the street , if it is there they will know it for sure.not much is kept "underground "in viet nam anymore .. if it is there the people will tell you .. they are VERY open and proud of their history , as they should be....there are MANY ancient japanese structures right in the city tour run by the vietnamese government right in the town of hoi an. take the tour [ available anywhere, hotels, tour shops] and ask .. if it is there they WILL take you ....but i never heard of it....