Arbor Blocks (Block 52W/57E) is part of the Facebook Seattle offices, located in the growing South Lake Union neighborhood. The (2) 6-story Core & Shell office buildings total 526,506-sf. Each building has street level retail and (4) levels of underground parking. The site includes public and private open, park-like space between buildings, rooftop decks, and garden terraces on floors three and seven, The building features an increased setback to preserve light and air for the existing sweet gum tree canopy along 8th avenue North. The street was converted into a pedestrian-friendly “woonerf,” which is Dutch for “living yard.” A park-like space between buildings has a specialty paving pattern and widened sidewalks. Plantings, seating and artwork enhance the street-level experience.