I just posted the photo-documentation of a walk I recently took near my old neighborhood in Waikīkī. There are 310 images of tree circles showing the diversity of treatments in the urban fabric. Tree circles mark a porosity of the hardscape. They connect the dots of the canopy and reflect the view of what a tree offers to the construction of place. Tree circles are an element of civic heritage because they are a mood-crafting element of the landscape image of the street. They pattern in ways that mark the passage of time in a place with continuity, discontinuity, salience and backgrounding. Take a look at the data set and see if you can spot how the images parse into categories of morphology, placement and variation.