http://pixabay.com/static/uploads/photo/2015/01/28/19/51/westminster-abbey-615205_640.jpg"Tower Bridge Open (6086268699)" by Tony Hisgett from Birmingham, UK - Tower Bridge OpenUploaded by tm. Licenced under CC BY 2.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Tower_Bridge_Open_(6086268699).jpg#mediaviewer/File:Tower_Bridge_Open_(6086268699).jpg http://upload.wikimedia.org/wikipedia/commons/0/0f/Geological_map_of_London_Basin.jpg http://pixabay.com/static/uploads/photo/2010/12/13/10/33/architecture-2892_640.jpg http://pixabay.com/static/uploads/photo/2015/02/12/15/47/london-633880_640.jpg http://pixabay.com/static/uploads/photo/2015/01/28/19/51/westminster-abbey-615205_640.jpg