From Ulm to Princeton, passing through Zurich and Berlin: a narrative guide to discover the symbolic places in Albert Einstein's life

by Marco Arezio

Not all journeys begin with a suitcase. Some begin with a question. For example: "How did the thought that rewrote the laws of the universe come about?"

Setting out in the footsteps of Albert Einstein isn't simply following the geographical map of a famous biography. It means setting out to understand how places, eras, and encounters shaped one of the most influential men in modern history. It means walking through history, but also into the intimacy of a brilliant mind.

Ulm, Zurich, Berlin, and Princeton aren't just cities. They're stages of an inner journey, intertwined with time and space, which we can explore today as curious travelers, amidst architecture, archives, landscapes, and silence. And, who knows, perhaps we too will return with a slightly different view of the world.

Ulm: The Silent Cradle of a Revolutionary Future

It all began in a modest apartment at 20 Bahnhofstrasse in Ulm, a town on the banks of the Danube in the heart of Württemberg. There is nothing grandiose about the place where Albert Einstein was born on March 14, 1879. And perhaps it is precisely this simplicity that is most striking.

Today, Ulm is a tidy city, with a historic center reminiscent of the Middle Ages, but also of German precision. The original building where the future father of relativity was born no longer exists: the bombs of World War II obliterated it. In its place, however, stands a sober yet significant monument, a starting point for a journey that promises much more than photographs: it promises reflection.

The tourist who comes here doesn't find a crowded museum or lines to get in. He finds time. Time to gaze at the sky above Ulm Minster, the church with the tallest bell tower in the world, rising like a Gothic arrow in the morning silence. He finds time to walk along the Danube, imagining the Einstein family—secular Jews, engineers, and entrepreneurs—who would soon leave the city to seek new opportunities.

Ulm can be visited in a day, but it will remain in your memory for much longer. It is the silent beginning of a movement destined to shake the world.

Zurich: The Birth of the Free Mind

If Ulm represents the first breath, Zurich is the accelerated beat of the intellectual heart. When Einstein arrived at the Swiss Federal Institute of Technology (ETH) in Zurich in 1896, he was just seventeen. His grades in some scientific subjects were not exceptional, but his mind already possessed something that escaped the norm.

Zurich, in those years, was a vibrant, European city in turmoil. Young Einstein was not a model student, but he attended physics and mathematics courses with interest, spending hours with a few professors whose expertise he recognized. After graduation, he didn't immediately find an academic position: he began working as a technician at the Patent Office in Bern, a city an hour away by train and which represented his true creative hotbed.

In 1905, while living in a modest apartment with his wife Mileva and jotting down formulas on tram papers, Einstein published four papers that would change physics forever. It was his Annus Mirabilis, the miraculous year. Yet all this happened in the silence of a white-collar job, in a sober Switzerland seemingly distant from revolutions.

Today, ETH Zurich is one of the most prestigious universities in the world. Visitors can enter the historic building, walk the corridors Einstein once walked, pause before the statue in his memory, and gaze into the classrooms where the ideas of a new world blossomed.

Not far away, in the heart of the city, is the Museum of Science and Technology, which offers an interactive immersion in physics and mathematics. Bern is worth a detour: in the Einsteinhaus, a house-museum at Kramgasse 49, you can see the apartment where Einstein lived between 1903 and 1905. A small kitchen, a bedroom, a wooden table. Nothing remarkable, except the mind that inhabited it.

Zurich and Bern tell the story of a young, restless, brilliant man, still far from fame, but already immersed in the great questions of the universe. It is on these streets that Einstein becomes the free thinker we will come to know.

Berlin: Glory and Exile

In 1914, Germany invited Einstein to Berlin with full honors.

Berlin consecrated him, but it didn't reassure him. The city was a cultural melting pot, but also an unstable place, shaken by the tensions of the Weimar Republic and, later, by the shadows of National Socialism. Einstein, a Jew and a pacifist, understood before most that the time for escape was near.

Anyone visiting Berlin today in Einstein's footsteps will find a multilayered, complex city, where past and present meet. The majestic Humboldt University building on Unter den Linden is open to visitors. Einstein taught here, and here one can imagine the echoes of his lectures. The Einstein Archive, now held by the Berlin-Brandenburg Academy of Sciences, contains thousands of manuscript pages, letters, and photographs: a treasure that can be consulted by appointment, with the respect due to a world heritage site.

In the Schöneberg district, a stumbling block at Haberlandstraße 5 commemorates the house where Einstein lived with his second wife, Elsa. Nothing remains of the structure, but that sidewalk tells it all. A small marker in a large city, yet one that speaks of exile, persecution, and escape.

Visiting Berlin with Einstein in your heart is a powerful experience. It's not just a tribute to science, but also a reflection on how fragile freedom is, and how powerful a solitary voice can be.

Princeton: the quiet beyond theory

In 1933, Einstein left Europe forever. His final destination was Princeton, New Jersey, where the Institute for Advanced Study offered him refuge and a laboratory. It was a quiet place, surrounded by trees and hills, an hour from New York, yet light-years away from the noise of the world.

Einstein would spend over twenty years there, immersed in increasingly abstract studies, searching for a unified theory that could unite all the forces of the universe. He would not succeed. But that failure was perhaps the most human gesture of his life: the obstinacy of searching, despite everything.

Einstein's house in Princeton, at 112 Mercer Street, is now a private residence and cannot be visited. But many tourists still go there, in silence, to admire the sober façade and imagine Einstein walking through the garden in his crumpled sweater, talking to himself. His office at the Institute for Advanced Study has been preserved as it was at the time of his death: a table full of papers, a blackboard, a window overlooking the countryside.

Those who come to Princeton to see Einstein also discover something else: the suspended atmosphere of a college town where time seems to slow down. The Firestone Library preserves documents and letters, while the Science Museum offers exhibitions on contemporary scientific thought.

This is the final chapter of a journey that doesn't end, but rather transforms. At Princeton, Einstein is no longer just a revolutionary physicist: he is the symbol of consciousness, the witness of a bygone era, and the forerunner of a world that still questions us.

Conclusion: come back different

A journey in Einstein's footsteps is much more than a tourist itinerary. It's an intellectual and emotional experience, where each stop reveals something about us: our roots, our questions, our capacity for change.

From Ulm, with its silent humility, to Zurich and Bern, cradles of discovery, passing through the grandeur and pain of Berlin, to the final meditation of Princeton, this journey takes us along a path that spans centuries, wars, ideas, and continents.

In the end, we return with the most precious baggage: not souvenirs, but new thoughts. And the awareness that the true universe to explore is the one within us.

Image: Wikimedia

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