Hi all,<br>I don&#39;t know if it can be of any help but in France, every monument has an id (or some times more than one if different parts of a monument are classified), but every monument can be identified by at least one id.<br>

<br>These ids aren&#39;t integer, they look like PA00083476.<br><br>Sylvain<br><br><div class="gmail_quote">2011/3/13 Ziko van Dijk <span dir="ltr">&lt;<a href="mailto:zvandijk@googlemail.com">zvandijk@googlemail.com</a>&gt;</span><br>

<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Oh, that is a problem in Germany too. The greatest we can dream of are<br>
unique ids in a state. But within a state, they often have ids only<br>
within a municipality.<br>
Ziko<br></blockquote></div><br>