architecture blocks boat buildings city cityscape England english Gherkin Great Britain landmarks London monument river shard skyscraper thames tower transport urban view Walkie Talkie water London Bridge rush hour tower blocks break bushes cold cover current disintegrate far flow freezing icy isolated melt melting natural nature norway norwegian pour snow snowy summer thick white wild wilderness landscape mountains plateau remote ridge Moncton skyline reflections skyline acuática agua bloom camalote estanque floating flor flores flotante flower invasive invasora jacinto de agua lila lilac morada ornamental pest plaga plant planta pond purple violeta line London Eye railway track train wheel austere bare bleak canada cliff difficult environment extreme face forbidding frozen harsh icicles mountain mountainside rock Rockies Rocky Mountains severe stern stream