One Canada Square the recycling of waste heat to cool and warm the building. Aggregates used in the office build were from predominantly recycled sources, part of a strategy to integrate sustainable products and materials throughout the site, delivering both affordable and sustainable environmentally friendly features to the building. One Canada Square energy performance has improved by decreasing 30% from 2007 to 2016 by initiatives such as installing LEDs and upgrading HVAC and water services. The ground floor, foyer area and basement levels of One Canada Square are open to the general public, having an underground retail area and a transport interchange from
Queen Square, London Preceptors (also known as the College of Teachers) occupied #42 Queen Square from 1855 until 1887. Many of the buildings surrounding the square are devoted to providing, researching and administering health care. Two hospitals, the National Hospital for Neurology and Neurosurgery (NHNN), often referred to synechdochally as "Queen Square", and the Royal London Hospital for Integrated Medicine (formerly the Royal London Homoeopathic Hospital), make up the east side of the square. The Institute of Neurology, part of University College London (UCL), is located in the north east corner of the square. The former Institute for Public Health takes up much