atmosphere boundary-walls brick-walls bricked-in bricks 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 walls weathered weathering worn agenda architecture arranged Ashton audience auditorium business chair chairs classical concert conference convention discussion empty entertainment event floor function furniture guest guests hall Lancaster lecture marble meeting Palladian place prepared private room semi-circle seminar Speaker stone talk theatre venue wall window