After almost three years of planning, design and construction, the 31-ton, 2.6 Tesla superconducting magnet for the Mu3e experiment arrived today at PSI in the early morning, after a three day road trip from the UK over the Channel and through France. It has been fully tested at the manufacturer and behaves even better than specified. The magnet delivery is an important milestone in the Mu3e experiment, which will search for New Physics in muon decays over the next years.