May 10, 2026 – October 31, 2026
Mathemagisch – Wilde Zahlen, verrückte Formen
More than 30 hands-on stations, based on a traveling exhibition by the Mathematikum Gießen, invite visitors to puzzle and experiment playfully – no formulas required.

Open-air museum in the Mäckingerbach valley: around 60 historic workshops and works showcase Westphalian crafts and technology in live demonstrations.
May 10, 2026 – October 31, 2026
More than 30 hands-on stations, based on a traveling exhibition by the Mathematikum Gießen, invite visitors to puzzle and experiment playfully – no formulas required.
April 1, 2026 – October 31, 2026
The show traces more than a hundred years of wristwatch history – from piece of jewelry and status symbol to the craft of watchmaking.
May 1, 2026 – October 31, 2026
Twelve interactive sound installations by the MobileMusikMuseum in the galvanizing works make metals audible and invite visitors to play along.
The idea of a museum for technical heritage goes back to Wilhelm Claas from Hagen, who in the 1920s devised a concept to preserve workshops and machines like works of art. The Landschaftsverband Westfalen-Lippe (LWL) took up the idea in 1960 and founded the museum; a support group of citizens and companies backed the project from as early as 1961.
From 1963, buildings from all over Westphalia were dismantled and re-erected in the previously almost undeveloped valley of the Mäckinger Bach stream in southern Hagen. The open-air museum opened to the public in spring 1973. Today the grounds cover around 42 hectares and include some 60 workshops, mills, hammer mills and factories from the late 18th century to the 1960s.
Its hands-on approach is what sets it apart: in many of the works, craftspeople operate historic machinery – they forge, make paper by hand, bake bread, roast coffee and brew beer. Water power from the stream drives hammers and mills, illustrating why water, wind and forest were crucial to the trades of the Märkisches Sauerland region.
The tour is complemented by permanent exhibitions such as the Deutsches Schmiedemuseum (German Blacksmithing Museum) and the Deutsches Kaltwalzmuseum (German Cold Rolling Museum), as well as special exhibitions that change annually. Today the museum bears the additional name Westfälisches Landesmuseum für Handwerk und Technik (Westphalian State Museum of Crafts and Technology) and is part of the LWL.
| Adults | €12 |
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| Reduced | €6Recipients of ongoing benefits under SGB II/XII (social welfare), university students up to and including age 30, trainees, volunteer service participants, members of the Förderverein NRW-Stiftung, people with a degree of disability (GdB) of 50 or more, holders of the NRW Ehrenamtskarte (volunteer card) (with proof) |
| Children & teens | freefree up to age 17 · Children and teens up to and including age 17 free. |
| Seniors | –No dedicated senior discount listed. |
| Visitors with disabilities | €6companion free · Reduced from GdB 50; if required, a companion is free with proof. |
| Students & apprentices | €6Reduced for university students up to and including age 30. |
| Groups (16+ people) | €9 per personGroups of 16 or more adults €9 per person. Guided tours (1 hr, max. 30 people) €40 plus admission; "Freilichtmuseum pur" tour (3 hrs) €100 plus admission. |
| Families | –No family ticket, since children and teens up to age 17 are free. |
| LWL-MuseumsCard (annual pass for all LWL museums) | €50Reduced €15, family card €70; free admission. |
Free admission: Free admission days 2026: May 9, July 5, August 1 and October 31
A ride on the museum railway is included in admission. Leashed dogs free (no access to buildings except restaurants; guide dogs allowed everywhere). Christmas market with separate admission.
Long, narrow valley with slopes and some cobblestones; a companion is needed on some inclines. Around 18 buildings are accessible at ground level or can be viewed from outside, plus additional low-barrier paths. Loaner wheelchairs at the ticket desk, overview map of accessibility. Tactile tours for blind and visually impaired people (max. 10 people), some Sunday tours with sign language interpretation, FM receivers with neck loops for the Sunday tour. Brochure and website in Easy Language (Leichte Sprache), German Sign Language (DGS) videos.
Great for kids & families
| Kids’ admission | free up to age 17 |
|---|
On weekends, hands-on activities on changing crafts (e.g., papermaking, rope twisting); on Sundays, tours for children aged 8 and up; rally sheet for the special exhibition at the ticket desk. Water playground near the entrance, baby changing rooms in every area of the museum. Children's birthday parties for ages 6–12 (approx. 2 hours).
Freilichtmuseum
From Hagen Hbf, bus 512 toward Selbecke or regional bus 84 toward Kierspe to the "Freilichtmuseum" stop.
Parking available
Large museum parking lot at the entrance, with accessible parking spaces there as well.
GPS address: Selbecker Straße 200, 58091 Hagen.
Get directionsRestaurant "Museumsterrassen" (accessible), "Braustube", café in the "Gasthof zur Post" (Sundays), kiosk at the playground, and snack grill with limited hours; a change of operators has been announced for the 2027 season. Museum shop at the entrance, grocery store with butcher, bakery. Picnic areas.
Celebrations in the "Museumsterrassen" restaurant, also outside opening hours, via the museum catering; commercial photo and film shoots on request.
Inquiries & details| Guided tours | yes · approx. 60 min |
|---|---|
| School programs | yes |
| Photography | Permitted for private purposes; no flash when photographing craftspeople. Commercial shoots on request. |
| Good to know | Open guided tour every Sunday of the season 14:00–15:00 (free). Request group tours and activity programs about three weeks in advance (tel. 02331 7807-333). Sturdy footwear recommended; loop trail about 3 km. |
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