@Christina, I’ve toured green roofs. That was the first thing I thought of when I read Ryan’s post. The MNU Landscape Arboretum has recently completed a large geothermal project which involves routing the pipes through the main parking lot. http://www.arboretum.umn.edu/geothermalheatingandcooling.aspx
There is a lot of interest in geothermal systems at the local home and garden shows. Landscape architects and designers could benefit from relationships with these companies and offer professional advice for aesthetic placement of the underground pipes. A home in my neighborhood had their system routed through the whole front and side yard and covered it with sod. There was no planning for trees, shrubs or patio and the lot looks barren.
