abstract background blended circular color colored colorful colors colour coloured colourful colours connected connections contoured contours contrast contrasting dark decorative design details edged edges interconnected interlinked light patterns perspectives shape shaped shapes style swirling texture textures thick thin vibrant wallpaper wavy blue broadcasting communication connection distance heaven message radio sky technique telegraphy black closed fastener open secret security sewing tailor zip zipper bridge car connect green pillar Poland river tram vistula warsaw wisla angles appearance architectural architecture building contemporary elements exterior external geometric geometric-shapes height high joined joins linear lines mesh meshed modern patterned roof roofing surface surfaces textured transparent triangles triangular unusual views windows barrier carriage-end carriages coaches confined display displayed door end equipment grille handles heritage historical history mat metal mobility passengers platform power rails railway railway-yard restoration restoration-yard restore restored train trains transport transportation travel wood wooden fingers friends friendship hand hands help helping people together