autumn avenue color colour England english exercise fall Great Britain landscape leisure London park parkland path pleasure public stroll trees view vista walk arch blue bridge centre city contemporary cross dundee footpath glass lighting modern over pedestrian purple rail railway span steel stylish tracks walkway creepy deep eerie forest green natural nature old Surrey Surrey Hills track trail trunks chalk downland farm field grassland hill meadow national park ridge summer Sussex grey greyscale monochrome blackpool coast coastal dawn destination direction empty lonely promenade relax route sea tarmac travel vacant