Done back in the middle of 2014/2015 for a Toronto Water proposal, I was tasked with rendering a series of images of a new Integrated Pumping Station at Ashbridges Bay Treatment Plant.  Working with an architect, we designed a single building (originally designed as two) as well as all nearby landscaping, in addition to working with engineers on a would-be construction phase and decommissioning of the old M&T buildings.  At the time, it was one of the largest projects I helped put together and with it my knowledge of Forest Pack and HDRI lighting in mental ray exploded.