A "monument" is a large structure or object created to remember and honor a person, event, or idea. It serves as a symbol to remind people of its significance and historical importance. Full definition
The objects act as monuments of thrift, leading to a pattern of language that could exist outside of the prevailing economic conditions. (gypsumgallery.com)
Since there is barely a square yard that wasn't fought over, there are also monuments in almost every village and at every bend in the road. (aswetravel.com)
The parks are the crown jewels in a much wider array of national monuments, national forests and other public lands. (dotearth.blogs.nytimes.com)