This seems to be the smallest World Heritage Site anywhere, and it takes about 2 minutes to see everything. It is very pretty and big, but the only justification for inscription I can see is that it is a representative example of the many plague columns all over Central Europe. There is a famous one in Vienna, and even one in my small hometown in Austria, which is maybe half the size of the Holy Trinity Column. The Old Town of Olomouc is really pretty, and the Town Hall next to the column is also very interesting. I think the entire city should have been inscribed instead of just the column.