The Unassuming Facade of the Number Nut
Tucked away in a quiet corner of Utrecht, the Number Nut is a peculiar museum dedicated to the world of numbers and mathematics. From the outside, it appears to be just another quaint building in the city’s historic district. However, stepping inside reveals a world filled with numerical oddities and mathematical curiosities.
A Journey Through Mathematical History

The museum's collection spans centuries, showcasing artifacts from ancient counting tools to modern computational devices. One of the highlights is a set of abacuses from different cultures, each illustrating unique methods of calculation. Visitors can also find early mechanical calculators, including a rare 19th-century Arithmometer, which was one of the first commercially successful calculating machines.

Interactive Exhibits for All Ages

The Number Nut offers several interactive exhibits designed to engage visitors of all ages. A popular attraction is the "Number Wall," where guests can explore the properties of prime numbers through touch-sensitive displays. Another engaging exhibit is the "Geometry Playground," featuring puzzles and games that challenge visitors to solve spatial problems using geometric shapes.
The Enigma of the Fibonacci Room
One of the most intriguing sections of the museum is the Fibonacci Room. This room is dedicated to the famous sequence and its occurrence in nature. The walls are adorned with images of spirals found in shells, flowers, and galaxies, all demonstrating the mathematical beauty of the Fibonacci sequence. Visitors can also participate in workshops to create their own Fibonacci-inspired art.
A Hub for Mathematical Enthusiasts
The Number Nut is not just a museum but a community hub for math enthusiasts. It regularly hosts lectures and workshops led by mathematicians and educators. These events cover a wide range of topics, from the history of mathematics to modern-day applications in technology and science.
Visiting Information
The Number Nut is open from Tuesday to Sunday, 10 AM to 5 PM. It is located at 12 Math Lane, Utrecht, easily accessible by public transport. Tickets can be purchased online or at the entrance, with discounts available for students and seniors.