abstract background city colors decay design grunge grungy texture urban bridge London Millennium modern river St. Paul thames architecture construction industrial New old time building glass metropolis office offices windows work autumn fall grass green leaf nature park bunch cafe café chair chairs furniture pile piles plastic 2014 bamboo crane development skyscraper angles appearances business-district city-street color colour contrast contrasting dark exterior external ladies light mall men pedestrian pedestrian-mall pedestrians people perspectives sauntering seating shade shadow shadows sight-seeing street strolling sunshine surface trees views walkers walking women 2015 Asia china chinese Hong Kong international Mong kok