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Arithmeum in Bonn
Photo: Stefan Knauf · Public domain · Wikimedia Commons

Arithmeum

University of Bonn museum on the history of calculation, with a world-class collection of historical calculating machines plus chip design and art.

Opening hoursAdmission from €3 Wheelchair accessible

Current exhibitions

June 13, 2026 – June 20, 2027

Die Kunstkammer Pohl-Goldschmidt

Precious mathematical and scientific instruments of the Renaissance from a private collection, originally made for princely cabinets of curiosities.

About the museum

The Arithmeum is based on the collection of Bonn mathematician Bernhard Korte, who began collecting mechanical calculating machines as a student – precisely in the 1970s, when electronics were displacing mechanics. From this core grew a collection that today numbers more than 10,000 objects, including calculating machines, historical computers, slide rules and an extensive library on the history of mathematics.

The museum is a central institution of the University of Bonn and shares a new building on Lennéstraße with the Research Institute for Discrete Mathematics. The building, with its delicate steel-and-glass facade, is meant to make the openness of science visible; the permanent exhibition "Rechnen einst und heute" (Calculating Then and Now) has been on view since September 1999.

The tour runs chronologically from counting stones, abacus and counting table through replicas and originals of the great inventors of calculating machines to industrial mass production, the beginnings of data processing and the Enigma. A separate section bridges the gap to the institute's current research on microchip design. The program is complemented by special exhibitions on the history of instruments, presentations of geometric-constructive art from the museum's own collection and the concert series "concerto discreto".

Highlights

  • One of the most extensive collections of historical calculating machines in the world
  • Calculating machines that visitors can try out themselves
  • Enigma and Hollerith machine from the early days of data processing
  • Section on the mathematics and aesthetics of chip design
  • Changing exhibitions of geometric-constructive art

Permanent exhibitions

  • Rechnen einst und heute – A chronological walk through the history of mechanical calculation up to early computers, cryptography and modern chip design, partly with machines to try out.
Founded
1999
Operated by
Rheinische Friedrich-Wilhelms-Universität Bonn, Forschungsinstitut für Diskrete Mathematik
Director
Ina Prinz

Admission & discounts

Adults€3
Reduced€2School students, university students, trainees
Children & teens€2Children free until they start school, then student price
Seniors–No senior discount listed
Visitors with disabilitiesfreecompanion free · People with severe disabilities and their necessary companions free
Students & apprentices€2
Groups (7+ people)–Groups of 7 to a maximum of 60 people only with a guided tour or by appointment. Guided tour (60–90 min.) €25 plus admission per person; no tour fee for school classes.
Families€8

Public guided tours on weekends without a tour fee (admission only). Children's programs, workshops and children's birthday parties €25 program fee plus €6 per participant.

Accessibility

  • Wheelchair accessible
  • Elevator
  • Accessible restroom: no information
  • Accessible parking: no information
  • Service dogs welcome: no information
  • Tactile models & exhibits: no information
  • Sign language tours: no information
  • Easy-to-read materials: no information
  • Audio description: no information

According to Bonn's accessibility portal, wheelchair-accessible with elevators; no information on the official website.

Kids & families

Great for kids & families

Family ticket€8
  • Family tours & workshops
  • Activity booklet, scavenger hunt or kids’ audio guide
  • Kids’ birthday parties

Rally sets through the permanent exhibition for children from preschool age; workshops from preschool to upper secondary school; children's birthday parties (€25 program fee plus €6 per child).

Getting there & parking

By public transit

Universität/Markt

Subway to Universität/Markt; train, tram and buses to Bonn Hauptbahnhof.

By car

Parking available

No parking directly at the museum; the museum refers visitors to the parking garages in the city center. Wheelchair users can reserve a parking space in advance by phone.

Get directions

Amenities & dining

  • Museum shop

Shop with catalogs, books and chip-design items.

Events & venue rental

The museum hasn’t published any information on this – please ask the museum directly.

Plan your visit

Guided toursyes · approx. 60 min
School programsyes
Good to knowFree public guided tours on weekends (permanent exhibition Sundays at 11:00, special exhibitions Saturday and Sunday afternoons). Group tours and workshops for daycare through upper secondary school and for adults by advance booking (Mon–Fri 9:00–18:00, tel. 0228 738790 or arithmeum@or.uni-bonn.de). Regular Monday concerts in the "concerto discreto" series. Tours last 60–90 minutes, as requested.

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