DEHUROEN

Plizio Visual Lab

Monthey Chemical Park

Plizio editorial teamData Sources
Industrial site
—°10
Monthey Chemical Park (Switzerland)

Weather…

The Monthey Chemical Park in Canton Valais is one of Switzerland's most significant industrial sites for chemical and pharmaceutical production. The area covers approximately 100 hectares and hosts several international corporations, including Syngenta, BASF, and Huntsman. The site's history dates back to the late 19th century, when the availability of hydroelectric power and salt deposits encouraged the establishment of the first factories. Today, the park specializes in the production of agrochemicals, pigments, polymers, and high-performance composite materials. Companies operating within the park benefit from shared services in logistics, energy supply, and wastewater treatment, which enhances overall efficiency. Monthey plays a pivotal role in the economy of the Lower Valais region, providing employment for thousands of people. Lately, there has been a strong focus on investing in sustainable production methods and reducing environmental footprints.

Best time to visit & climate

The most pleasant time to visit is Jun–Aug.

JanFebMarAprMayJunJulAugSepOctNovDec
Avg °C-2-227111517171393-1
Rain mm92729081127114115120819490101

📋 Practical info

🏭
What is this place?
Monthey Chemical Park is one of Switzerland's largest chemical production sites, located in the Lower Valais region. It plays a vital role in manufacturing complex chemical compounds and specialty products for global markets.
🚪
Visiting
The site is a highly secured industrial zone; public access is generally not permitted. However, you can see the extensive facilities from the public road along the Rhône valley.
👀
Where to view it
The best vantage point is the road bridge over the Rhône near the park, offering a panoramic view of the chemical plants. Another viewpoint is the nearby hillside of the Valais Alps.
🧺
Local products
The park produces industrial chemicals not for direct consumer sale. In the Valais region, travelers can find local products such as wine, cheese, and apricots, especially in nearby Monthey town.
📆
Active season
The chemical park runs around the clock year-round, with maintenance periods usually occurring in summer. Peak production often aligns with global demand for specialty chemicals in autumn and spring.
➕
Nearby
Combine with a visit to the medieval town of Monthey and the nearby thermal baths of Val d'Illiez. The scenic vineyards of the Valais and the Dents du Midi mountain are also close.

Geography

Coordinates
46.25110, 6.94520

Facts

  • Industrial development in Monthey began in 1897 with the construction of a plant for the electrolytic production of caustic soda.
  • Syngenta operates its world-largest production site for herbicides in Monthey.
  • The chemical park is directly connected to the Swiss railway network and the A9 motorway.
  • Cimo is the service company responsible for managing the infrastructure within the park.
  • A total of over 2,000 employees work for the various companies located on the site.
  • Over 100,000 tons of chemical products are manufactured in the park every year.

Explore nearby

Notable places around

MontheyMonthey<1 km · EExplore →
Collombey-MurazCollombey-Muraz3 km · NExplore →
BexBex5 km · EExplore →
Saint-MauriceSaint-Maurice6 km · SEExplore →
AigleAigle8 km · NExplore →
Lac de la GryonneLac de la Gryonne9 km · EExplore →
Villars-sur-OllonVillars-sur-Ollon10 km · NEExplore →
Val d'IlliezVal d'Illiez11 km · SWExplore →

Route planner — Car & Motorhome

Where do you start? We build the route here, with stops and country notes along the way.

Vehicle
Only stops with (optional):

© OpenStreetMap contributors · OpenRouteService

Sights in the town Monthey Chemical Park (10)

Château-Vieux

Château-Vieux is an archaeological site in Monthey in the canton of Valais, Switzerland.

La Bavette P'tit theatre de la Vieze

Small theatre by the Vièze river in Monthey, hosting local performances.

The Gorges of the river Vieze

Viewpoint overlooking the gorges of the Vièze river in Monthey.

Maison Devantery (XVIIe siècle)🏰 castle

A 17th-century residential house in Monthey, Switzerland.

Eglise Evangelique

Evangelical church in Monthey, Switzerland.

St-Sylvestre

St. Sylvester church in Monthey, Switzerland.

Manoir de Châtillon-Larringes🏰 castle

Du Fay de Lavallaz castle in Collembey, Switzerland.

chez Mel

A venue or meeting point in Monthey.

Site néolithique de la Barmaz

Neolithic site in Monthey, Switzerland.

Sights nearby

Frequently asked questions

What is produced at the Monthey Chemical Park?
Focus areas include agrochemicals, specialty chemicals, and active pharmaceutical ingredients by companies like Syngenta.
Is the site accessible to tourists?
No, it is a closed industrial site without public tours.
What is its significance for the Valais region?
It is one of the most important employers and economic drivers in the Lower Valais region.
What can be seen from the outside?
The imposing industrial facilities and pipeline systems can be seen from the edge of the city.
Is there a visitor center?
There is no public visitor center; professional visitors require authorization.
Monthey Chemical Park: where is it located?
Monthey Chemical Park is located in Switzerland.
Monthey Chemical Park: what is there to see?
Highlights include Chapelle du Pont, Château-Vieux, La Bavette P'tit theatre de la Vieze.
Monthey Chemical Park: when is the best time to visit?
The most pleasant time to visit is Jun, Aug.
Monthey Chemical Park: why is it worth visiting?
The Monthey Chemical Park in Canton Valais is one of Switzerland's most significant industrial sites for chemical and pharmaceutical production.
View on map → The Top 50 Attractions → OpenStreetMap →
Europe
Explore with Plizio Discover more places in Europe
More places in Switzerland →

Nearby cities

Köniz — Monthey Chemical Park (Switzerland)
Köniz
Köniz is a municipality located directly south of Bern.
La Chaux-de-Fonds — Monthey Chemical Park (Switzerland)
La Chaux-de-Fonds
The city in the Canton of Neuchâtel is the primary center of the Swiss watchmaking industry.
Neuchâtel — Monthey Chemical Park (Switzerland)
Neuchâtel
The capital of the eponymous canton is located on the northern shore of Lake Neuchâtel.
Emmen — Monthey Chemical Park (Switzerland)
Emmen
Emmen is a significant city in the Canton of Lucerne.
Yverdon-les-Bains — Monthey Chemical Park (Switzerland)
Yverdon-les-Bains
This city is located at the southwestern end of Lake Neuchâtel and is famous for its thermal springs.
Lancy — Monthey Chemical Park (Switzerland)
Lancy
Lancy is a city in the Canton of Geneva and part of the Geneva metropolitan area.
Bulle — Monthey Chemical Park (Switzerland)
Bulle
Bulle is the economic center of the Gruyère region in the Canton of Fribourg.
Bulle-La Tour — Monthey Chemical Park (Switzerland)
Bulle-La Tour
Bulle is located in the canton of Fribourg in the Gruyère region.
Renens — Monthey Chemical Park (Switzerland)
Renens
Renens is a city in the Canton of Vaud and part of the Lausanne metropolitan area.
Vevey — Monthey Chemical Park (Switzerland)
Vevey
Vevey is located on Lake Geneva in the canton of Vaud.
Meyrin — Monthey Chemical Park (Switzerland)
Meyrin
Meyrin is a municipality in the Canton of Geneva.
Carouge — Monthey Chemical Park (Switzerland)
Carouge
Carouge is a city in the Canton of Geneva, directly adjacent to the city of Geneva.
Olten — Monthey Chemical Park (Switzerland)
Olten
Olten is the largest city in the Canton of Solothurn and the most important railway junction in Switzerland.
Martigny — Monthey Chemical Park (Switzerland)
Martigny
Martigny is located in Lower Valais at the confluence of the Drance valley and the Rhône.
Nyon — Monthey Chemical Park (Switzerland)
Nyon
Nyon is located on Lake Geneva in the Canton of Vaud.