I've previously discussed facadism, one type of 'conservation' which maintains the facade while losing the original structure behind. Here is another piece of preservation which loses some of the original context.
This parish marker on the Thames path marks the boundary between St Paul's, Deptford and St Mary, Rotherhithe. It was also the line between Kent and Surrey. I particularly like the economy of adding dates below the original one, rather than replacing the markers.
However, the stone has been moved from its original site, where it formed part of a bridge; it was put in its present position in 1988. That seems a strange fate for something whose precise location was so important. The small length of wall mid-path is also rather incongruous.
That is perhaps a little grudging, though. The most important factor is that when the bridge went, the stone was not discarded but remains beside the river as a tangible survivor from Deptford's (and Rotherhithe's) past.