blue hour over the beautiful lake of ada ciganlija in belgrade

ada ciganlija beauty capital cities dawn dusk famous place idyllic lake landscape scenery light natural phenomenon long exposure nature people outdoors public park reflection river scenics serbia silhouette spring flowing water summer sunrise sunset symmetry tranquility travel twilight abstract art backgrounds beach belgrade coastline empty relaxation shade shadow sunbathing sunshade tourism tourist resort tropical climate umbrella vacations 039 edge white color blue hour calm