Btw landmarks in the navigational sense are not the same as landmarks in a tourist sense.
A tourist landmark would be “the grand canyon” or the “eifel-tower”. A navigational landmark is something like “a scrawny bush which seems to have grown leaning on that big rock with a flat top”, “the 3 story building where the middle level had a fresh coat of paint on the corner window frames”, or “corner of a park where 3 roads meet, and one of them has a deli with the picture of a prawn in the window”
A tourist landmark would be “the grand canyon” or the “eifel-tower”. A navigational landmark is something like “a scrawny bush which seems to have grown leaning on that big rock with a flat top”, “the 3 story building where the middle level had a fresh coat of paint on the corner window frames”, or “corner of a park where 3 roads meet, and one of them has a deli with the picture of a prawn in the window”