(via) This innovative window system by Vitrocsa combines both traditional pivot and sliding technologies with each pane of glass supported by two custom crafted pivots that slide on stainless steel rollers. This allows for the panels to slide horizontally along a low-profile track, to pivot around corners, and to be moved/stacked away completely to create a single large opening. (Note that owning this system is a desire predicated on the absolute fantasy that one day we will be able to afford a nice house with a view in Vancouver.)