aged aging angles appearance belief burials cemetery deceased decorative Designs elements faith features funeral graves graveside Gravestones gray grey headstone heritage historic history light marker memorial memories memory old ornamental ornamentation perspectives public religion religious remembrance respect resting-place Sacred sad shaped solid Somber sombre stonework surfaces tombstones weathered Armenian cross crosses deterioration discoloration exterior external headstones historical memorials monochrome sculpted sculptures sepia Singapore statuary statues greyscale 12th Century ancient architecture building christian church dark Hopperstad mediaeval medieval norway norwegian ornate pillars stave tar tarred tiles Vik wooden