The city of Bern, where Albert Einstein spent his happiest and most productive years, is filled with tributes to the famous physicist — some more relevant than others. Einstein lived in Bern for seven years between 1902 and 1909, from the ages of 23 to 30 — a time he later described as the happiest and most fruitful of his life. He published 32 articles during his time in Bern, six of which are still considered part of the canon of modern physics.