The Arithmeum is a unique museum located in Bonn, Germany, that celebrates the history and beauty of arithmetic. It is part of the Research Institute for Discrete Mathematics at the University of Bonn. This fascinating museum features an extensive collection of historical calculating machines, including rare pieces such as the early 19th-century step reckoner built by the famous mathematician Gottfried Wilhelm Leibniz. Over 1,200 objects on display showcase the evolution of mechanical calculating from the simple abacus to sophisticated digital computers. The Arithmeum is not just a place that documents the technological progress of calculators; it also merges the worlds of science and art by holding a collection of kinetic art. Furthermore, the museum's architecture itself is a celebration of arithmetic, with its design incorporating binary numbers and a facade that reflects the museum's dedication to calculation. With its interactive exhibits and engaging displays, the Arithmeum is a center of learning for visitors interested in mathematics, computer science, and the history of technology.