(info from wikipedia) and put it on a so-called 'Tentative List. Such a list is based on an inventory a country must first take of its significant cultural and natural properties. A country may not nominate properties that have not already been included on the Tentative List. Next, it can select a property from this list to place into a Nomination File. The UNESCO World Heritage Centre offers advice and help in preparing this file.
At this point, the file is evaluated by the International Council on Monuments and Sites and the World Conservation Union. These bodies then make their recommendations to the World Heritage Committee. The Committee meets once per year to determine whether or not to inscribe each nominated property on the World Heritage List, and sometimes defers the decision to request more information from the country who nominated the site. There are ten selection criteria - a site must meet at least one of them to be included on the list.
For a list of criteria please visit Wikipedia:
en.wikipedia.org
The UNESCO now keeps an web-database on the La Chaux-de-Fonds / Le Locle Site (Ref. 1302):
whc.unesco.org
Best,
Magnus
This message has been edited by Magnus Bosse on 2009-06-29 12:45:19