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
Park Square, London Park Square, London Park Square is north of Park Crescent and the Marylebone Road in London. It consists of large elegant stuccoed terraced houses by the architect John Nash, and was built in 1823–24. To the south of the square is Regent's Park tube station. Park Square Gardens are in the centre of the square. Immediately to the north is Regent's Park. Most of the square is in Westminster, but the eastern side is in Camden. The square is one of the largest private squares in London. It is dominated by plane trees, originally planted in 1817 to commemorate the