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Quick answer
The World Heritage property of La Chaux-de-Fonds and Le Locle, inscribed in 2009 for what its foundation calls their 'urbanisme horloger' (watchmaking town planning), is the two towns themselves: the Swiss Commission for UNESCO describes twin towns where places of production and of living are closely interwoven for the watch industry and its workers. It is not a single monument with an entrance. The Fondation Urbanisme Horloger points visitors to the Espace de l'Urbanisme horloger in La Chaux-de-Fonds and the Espace Temps et Urbanisme in Le Locle as starting points; the town of Le Locle publishes a 39-stage watchmaking trail; and the foundation runs World Heritage Days in June and the Biennale du Patrimoine Horloger, held regularly in autumn (the 2026 edition was scheduled for 29 October to 1 November), when workshops normally closed to the public open. The watchmaking craft has its own, separate UNESCO listing (2020).
The short answer
What UNESCO listed in 2009 is not a building in La Chaux-de-Fonds or Le Locle but the way both towns are put together. The Swiss Commission for UNESCO lists the property as "La Chaux-de-Fonds / Le Locle, Stadtlandschaft Uhrenindustrie" and describes twin towns showing a complete symbiosis of urban planning and industry, where places of production and of living are closely tied to serve both economic efficiency and the workers' quality of life.[1] The foundation that promotes the site says the heritage is still visible in the towns' organisation, their architecture and the watchmaking production sites in the heart of both.[2]
So this is not a single monument with an entrance. On the ground, the listing is read in the streets, with help from two small visitor spaces, a watchmaking trail in Le Locle, two watchmaking museums, and two recurring events that open doors normally closed: World Heritage Days every June and the Biennale in autumn. Le Locle's official pages and the foundation's are in French; the foundation's English address redirects to its French site.
What "watchmaking town planning" means
The Fondation Urbanisme Horloger, created after the inscription, quotes a description of what to look for: apartment buildings designed for working at home stand next to the employers' houses, the workshops and the more recent factories, in an urban fabric it calls homogeneous, rational and open to the outside. It also recalls that Karl Marx, analysing the division of labour in *Capital*, took the watch industry of the Swiss Jura as his example and coined the term "ville-manufacture", manufacture-town, for La Chaux-de-Fonds.[3]
The town of Le Locle presents itself as the older half of the story. Its UNESCO page calls it the "Mère Commune", the mother commune of the Neuchâtel mountains, "recognised as the cradle of the watch industry", and tells, explicitly as legend, how Daniel JeanRichard (1665–1741) repaired a watch made in London and in 1705 opened his own workshop in Le Locle.[8] That is the town's account, attributed to it here.
Where to start in each town
The foundation names two starting points for learning the history and layout of the site: the Espace de l'Urbanisme horloger in La Chaux-de-Fonds and the Espace Temps et Urbanisme in Le Locle. It says Le Locle's tourist information point and the Espace's reception desk in La Chaux-de-Fonds can advise on ways to visit the site seven days a week.[4]
Le Locle. The town's UNESCO page places the Espace "Temps et Urbanisme" on the third and top floor of the Hôtel de Ville, with multimedia terminals on the history of Le Locle's watchmaking town planning, and lists it as free to enter. The same page lists a guided walk on Saturday afternoons in July and August, on reservation only.[8] The town's watchmaking trail, the "parcours horloger", has 39 stages, starts in front of the Hôtel de Ville and ends at the Musée d'horlogerie du Locle in the Château des Monts; its printed guide, in French, German and English, is free from the town's museums, the canton's tourist offices and the Hôtel de Ville, or by email. The trail dates from 2004, five years before the inscription.[9]
La Chaux-de-Fonds. XTOUR has no page of the town's own about visiting the site; on 9 October 2026 its official site gave no readable text. The foundation's own address is in La Chaux-de-Fonds, care of the town's planning service.[2]
Museums. The foundation points to two museums for the watchmaking and art-mechanics skills behind the buildings: the Musée international d'horlogerie in La Chaux-de-Fonds and the Musée d'horlogerie du Locle at the Château des Monts.[4]
Two events that open closed doors
World Heritage Days, in June. The foundation holds these every June.[3] The 2026 edition, on 13 and 14 June, offered guided walks, children's activities, a show, a talk and open houses in heritage places rarely open to the public, among them the Maison DuBois, a former watch "comptoir" in Le Locle, and the Salon bleu in La Chaux-de-Fonds, as well as a 180-minute guided visit covering both towns.[7] That programme is past; it shows what the June weekend contains.
The Biennale du Patrimoine Horloger, in autumn. The foundation says the Biennale opens major manufactures, workshops, subcontractors and heritage places linked to watchmaking that are usually closed. The twelfth edition was scheduled for 29 October to 1 November 2026 in La Chaux-de-Fonds, Le Locle and Saint-Imier.[2][5]
Saint-Imier, the third Biennale town, is not named in the World Heritage property, which the Swiss Commission lists as "La Chaux-de-Fonds / Le Locle".[5][1]
Two UNESCO lists, two different things
The town-planning property is on the World Heritage List.[1] The watchmaking craft is on a different UNESCO list: "Craftsmanship of mechanical watchmaking and art mechanics" was inscribed in 2020 on the Representative List of the Intangible Cultural Heritage of Humanity, for Switzerland and France together. UNESCO's summary of the craft names the Jura Arc as an area where it remains particularly dynamic and says the skills "have also shaped the architecture, urban landscape and everyday social reality of the regions concerned".[10]
XTOUR's reading is that the two listings meet in these towns but are not the same designation: one protects streets and buildings, the other a living skill shared across a border. The foundation also publishes five short "Petit guide" booklets since 2021, on subjects such as the watchmaking town plan, the old towns and the local "style sapin", sold in local bookshops and tourist offices.[3]
For the other Swiss World Heritage sites, see Switzerland's World Heritage sites; for the craft listing in its Swiss context, see Switzerland's intangible heritage. Both towns are in Switzerland; neither is an XTOUR destination.
What XTOUR does not know
- XTOUR does not know the opening hours of the Espace de l'Urbanisme horloger or of the two museums.
- XTOUR does not publish travel times between La Chaux-de-Fonds and Le Locle or from other Swiss cities.
- Which manufactures, if any, receive visitors outside the Biennale.
- Anything from Tourisme neuchâtelois, whose page returned a Cloudflare challenge on 9 October 2026.
Sources & references
- [1]Swiss Commission for UNESCO (unesco.ch), 'Welterbe' (German): 13 World Heritage sites in Switzerland; 'La Chaux-de-Fonds / Le Locle, Stadtlandschaft Uhrenindustrie (2009)'; 'Diese Zwillingsstädte zeugen von einer vollkommenen Symbiose zwischen Urbanistik und Industrie'; production and living places closely connected to serve both economic efficiency and workers' quality of life; continuation of industrial culture and authentic preservation of the townscape. Read 2026-10-09
- [2]Fondation Urbanisme Horloger (urbanisme-horloger.ch), home page (French; /en/ redirects to /fr/): Le Locle and La Chaux-de-Fonds inscribed for 'leur urbanisme horloger unique au monde'; heritage visible in the organisation, architecture and watchmaking production sites in the heart of both towns; recognised in 2009; 12th Biennale du Patrimoine Horloger; Pass Biennale introduced this year; address Passage Léopold-Robert 3, La Chaux-de-Fonds, c/o the town's urban planning service. Read 2026-10-09
- [3]Fondation Urbanisme Horloger (urbanisme-horloger.ch), 'Fondation' (French): created in the wake of the June 2009 inscription; quotes 'Les immeubles d'habitation conçus pour le travail à domicile voisinent avec les maisons patronales, les ateliers et les usines plus récentes, au sein d'un tissu urbain homogène, rationnel et ouvert sur l'extérieur' and Marx's term 'ville-manufacture' for La Chaux-de-Fonds; board members from both towns; organises the World Heritage Days each June and the Biennale in autumn; five 'Petit guide' booklets since 2021 sold in local bookshops and tourist offices. Read 2026-10-09
- [4]Fondation Urbanisme Horloger (urbanisme-horloger.ch), 'Offre touristique' (French): the Espace de l'Urbanisme horloger in La Chaux-de-Fonds and the Espace Temps et Urbanisme in Le Locle as starting points; Le Locle's tourist information point and the Espace's reception desk inform visitors 7 days a week; Tourisme neuchâtelois (Jura Trois Lacs) coordinates tourist products; the Musée international d'horlogerie in La Chaux-de-Fonds and the Musée d'horlogerie du Locle at the Château des Monts. Read 2026-10-09
- [5]Fondation Urbanisme Horloger (urbanisme-horloger.ch), 'Biennale' (French): manufactures, workshops, subcontractors and heritage places linked to watchmaking, usually closed, open to the public; held regularly in autumn in La Chaux-de-Fonds, Le Locle and Saint-Imier; 2026 edition 29 October to 1 November 2026; bookings opened 22 September at 5 pm. Read 2026-10-09
- [6]Fondation Urbanisme Horloger (urbanisme-horloger.ch), 'Infos pratiques et Pass Biennale' (French): single-price Pass Biennale for 29 October to 1 November, free for under-18s; extra entry charge for some company visits; all bookings on urbanisme-horloger.ch; pass sold online and at listed points in Le Locle, La Chaux-de-Fonds and Saint-Imier; pass and entry charges cover only the Biennale's costs and are not paid to the manufactures or workshops; list of museums and open houses included. Read 2026-10-09
- [7]Fondation Urbanisme Horloger (urbanisme-horloger.ch), 'Journées du Patrimoine mondial' (French): 13 and 14 June 2026 programme of guided walks, children's activities, a show, a talk and open houses in heritage places rarely open, including a 180-minute inter-town visit from Le Locle to La Chaux-de-Fonds, the Maison DuBois former watch comptoir in Le Locle and the Salon bleu in La Chaux-de-Fonds. Read 2026-10-09
- [8]Ville du Locle (lelocle.ch), 'Unesco' (French): the towns' urban planning and architecture developed according to watchmaking's needs; inscribed June 2009; Le Locle the 'Mère Commune' and 'reconnue comme le berceau de l'industrie horlogère'; 'Selon la légende' Daniel JeanRichard (1665-1741) repaired a London watch and opened his workshop in Le Locle in 1705; Espace 'Temps et Urbanisme' on the third floor of the Hôtel de Ville, multimedia terminals, free entry; guided walk on Saturday afternoons in July and August by reservation; tourist information point at the Hôtel de Ville open 7/7. Read 2026-10-09
- [9]Ville du Locle (lelocle.ch), 'Parcours horloger' (French): 39-stage watchmaking trail inaugurated 16 June 2004, starting at the Hôtel de Ville forecourt and ending at the Musée d'horlogerie du Locle at the Château des Monts; free guides in French, German and English from museums, tourist offices and the Hôtel de Ville or by email; some brands allow workshop visits on prior request; part of the trail by tourist train. Read 2026-10-09
- [10]UNESCO Intangible Cultural Heritage (ich.unesco.org), 'Craftsmanship of mechanical watchmaking and art mechanics', nomination file No. 01560 (English): inscribed 2020 (15.COM) on the Representative List for Switzerland and France; watches, clocks, automata, music boxes; the Jura Arc as an area where the craft remains dynamic; 'the skills have also shaped the architecture, urban landscape and everyday social reality of the regions concerned'. Read 2026-10-09
Frequently asked questions
Good to know
Can I visit watch manufactures in La Chaux-de-Fonds or Le Locle?
On certain occasions. The Fondation Urbanisme Horloger says its Biennale du Patrimoine Horloger opens major manufactures, workshops and subcontractors that are usually closed to the public; the 2026 edition was scheduled for 29 October to 1 November in La Chaux-de-Fonds, Le Locle and Saint-Imier. Outside it, the town of Le Locle's trail page says some brands let visitors see their workshops on prior request. XTOUR does not know which.
Is the Biennale pass money paid to the watch companies?
No, according to the Fondation Urbanisme Horloger's practical page: the Pass Biennale and entry charges cover only the cost of organising the Biennale and support the foundation's work, and none of the money goes to the manufactures or workshops, which open their doors and offer their activities free.