The plaza and memorial is dedicated in memory of a group of Cuban refugees who were attempted escape from Cuba via boat and were subsequently attacked and drowned by Fidel Castro's forces on May 13, 1994. It's interesting to see the memorial mural with the map of Cuban and ship, however, it is very simple and you can take it all in relatively quickly. Worth seeing if you have a particular interest in Cuban history, but I wouldn't recommend a trip out of the way for the average tourist.