brick bricks building construcition frame free glass spare wall warsaw window windows background barrier brown build converge copyspace distance mortar parallel perspective ancient grunge texture wall texture castle defensive fortified medieval tower town walls atmosphere boundary-walls brick-walls bricked-in color colored colors colour coloured colours covered damp deteriorated deterioration discoloration discoloured embedded European-burial-ground faded fading ferns foliage Fort-Canning-Green Gravestones greenery growth headstones historic historic-cemetery-area history incorporated lichen lichens memorial memorial-walls mold mould old path Singapore steps tombstones weathered weathering worn abstract angle angles appearance architectural architecture basic brick-wall brickwork exterior external perspectives rough smooth solid standard strength surface surfaces textured textures uneven variation varied various wallpaper