it’s a monument. it’s a benchmark. it’s something surveyors need when measuring land and elevations. it’s a nerd engineer thing when you smile and take a picture of these unassuming monuments on streets and you understand what they are. they could also be nice places for you to take a picture of and locate with a GPS and know where you’ve really been and not just a name of a place. 🙂 so, you know, i was at 16° 24.800′, 120° 35.524′ at some point in time.