beach calm coastline dusk England english evening Great Britain groyne nature placid sea shore sunset Sussex water winter boat capital city cloud dark landmark London ripples river sky thames coastal exercise footpath green hillside light natural Pembrokeshire ridge wales walk welsh birds clouds island reflection sea water waves lady memory ocean seashore silhouette sun sundown blue George Washington Br Hudson River lights Manhattan New Jersey New York night red romantic skyscraper suspension bridge bird birding golden Heron krayker pond Pond Heron bricks castle dawn fortress guard medieval protest stones tower trokai walls