When I taught in a rural community, I used the school lawn for teaching my version of astronomy with a stick--we used a telephone pole as one of our "sticks" throughout the school year to "see" the movement of the sun and moon in relation to north and south (even though it really was our orbit path changes through out the year; this made understanding easier for HS students). I have attached the moon phases activity with student handouts included for those interested. I used this in physical science (9th graaders) and in Earth Science when it was taught. I even used it sometimes in trigonometry.
I also used the surrounding geology; the problem of building a new elementary school on Mancos shale-although the building was stablized to bedrock, the hillside to the NE of the school wasn't stabilized and we monitored the movement of the hill via a retaining wall and how much the bricks were pushed out.
We collected water quality data on the stream about 0.5 miles from the school for the state as well as our own interest.
These are a few of my place-based lesson ideas many which become projects for students.