With 200 trees, 1.5 km of pathways, grass, flowers, and seldom-seen views of downtown Ottawa, the 1983 Rideau Centre and 1969 National Arts Centre have Ottawa's first large-scale "green roofs". Discover a new perspective of these complex buildings and the heritage buildings and sites that surround them. GUIDE: David Jeanes, President of Heritage Ottawa, urban activist and author of five downtown […]