[Tagging] tagging a point of interest of sorts

[Nathan Edgars II]

A related question is how to tag something like this:
http://commons.wikimedia.org/wiki/File:US_192_marker_7_eastbound.jpg
It's often called a mile marker, but the distance between each
consecutive pair is not constant. The intent is for tourist-oriented
businesses to advertise their location with respect to the markers. I
used man_made=tower name=Marker 7, but I don't know if this is best.