Compared to the beauty of other Swiss cities La Chaux-de-Fonds and Le Locle are rather disappointing. I'm sure this WHS deserves its status, but it's not really a spectacular site for sightseeing. I guess you have to be an expert in architecture to see the interesting aspect of these cities. However, the national watch museum in La Chaux-de-Fonds is well worth a visit. The exibition includes watches from all ages and all over the country. If you plan to visit this site, do it on a short trip from Neuchatel. La Chaux-de-Fonds is easy to reach from there by train.