🇦🇷 Argentina · Buenos Aires
Just 60 km from Buenos Aires, La Plata is an urban oddity: a city invented from scratch. It did not grow slowly around a port or a church; it was designed at a drawing board in 1882 to be the new capital of Buenos Aires province. The result is a perfect grid, a square crossed by diagonals that form diamonds and triangles, with squares and parks laid out with mathematical precision every six blocks. That is why it is known as the 'City of Diagonals' and, for its tree-lined streets, as the 'City of Linden Trees'.
Walking La Plata means walking through a monumental project made real. A historic axis crosses the city linking its great public buildings: the imposing neo-Gothic cathedral facing Plaza Moreno, the city hall, the Casa de Gobierno, the Pasaje Dardo Rocha. A few blocks away, the Paseo del Bosque brings together the famous natural sciences museum — one of the most important in Latin America — the Teatro Argentino, the observatory, the historic zoo and the university. And for architecture lovers, La Plata holds a unique gem: Casa Curutchet, the only Le Corbusier building in South America, today a World Heritage Site.
But La Plata is not only monuments: it is a university city, young and culturally intense, with cafés, theaters, bookshops and lively nightlife. Add the República de los Niños — the theme park that was a pioneer in the Americas and drew illustrious visitors — and the mystery around its layout, full of supposed Masonic symbolism, and you have a fascinating destination: planning, science, art and legend, all a step away from Buenos Aires and perfect for a one or two-day break.
La Plata is the child of a political conflict and a modern idea. When the City of Buenos Aires was federalized in 1880 and turned into the national capital, Buenos Aires province was left without a capital of its own. Governor Dardo Rocha then pushed for the creation of an entirely new city to fill that role, and chose a site near Buenos Aires, with a port in the Ensenada area and good conditions for concentrating the provincial economy. On 19 November 1882 the foundation stone was laid and La Plata was officially born. The design was handled by the Department of Engineers, with Pedro Benoit as the key figure: a unique geometric plan, a perfect square crossed by diagonals, with squares every six blocks, wide tree-lined avenues and a monumental axis of public buildings. The city went up at astonishing speed and soon had cutting-edge institutions: the university, the observatory and the celebrated natural sciences museum. Both Rocha and Benoit were Freemasons, as were many of the professionals who worked on the project, which fed the idea — part history, part legend — that the layout hides Masonic symbols such as the square and compasses. The city's legends were born with it too, such as the supposed 'curse' cast on the day of its founding. La Plata established itself as the provincial capital and an educational and scientific hub, and today it combines its monumental heritage with an intense university and cultural life. The full story is on our history page.
Read the full history ↓The agro-export heart of Argentina: the endless pampa that was the land of the Querandí and the Pampa peoples, the domain of governor Rosas, the engine of cattle and wheat with La Plata as its purpose-built capital, cradle of the gaucho and of the Atlantic Coast where the whole country spends its summer.
Read the history of Buenos Aires Province →No exact prices: a scale from $ (budget) to $$$$$ (luxury), with 2-3 options per category.
Origins, formation and what the sources say.
La Plata exists because of a crisis. For much of the 19th century, the City of Buenos Aires was at once the capital of the country and the capital of Buenos Aires province, a double status that fed decades of tension between the nation and its most powerful province. The conflict was settled in 1880, when Buenos Aires was federalized and turned into the capital of the Republic. The immediate consequence was that Buenos Aires province was left, overnight, without a capital of its own.
Governor Dardo Rocha then made a bold decision: rather than pick an existing town, he would create a new capital, built from scratch, modern and planned, worthy of the ideas of progress of the day. The chosen site was in the Ensenada district, about 60 km from Buenos Aires, and it ticked the boxes: close to the national capital, able to host a port, with suitable terrain and climate and the capacity to concentrate the provincial economy.
On 19 November 1882 the foundation stone was laid and La Plata was officially born. This was not a city that had grown slowly around a church or a fort, but an integrated project conceived as a work of engineering, urban planning and politics. Within a few years its public buildings, its squares, its avenues and its first institutions went up, in one of the most remarkable planned urban foundations of its time.
What makes La Plata unique is its shape. The design was handled by the province's Department of Engineers, with the engineer and architect Pedro Benoit as the key figure. The result was a geometric plan of almost obsessive precision: a perfect square, organized as a grid (streets meeting at right angles), crossed by diagonal avenues that cut through it forming diamonds and triangles.
That layout was not an aesthetic whim but the application of the most modern urban planning ideas of the day, inspired in part by the great reforms of European cities. The diagonals sped up circulation and connected distant points of the grid in a straight line; the squares and parks were distributed exactly every six blocks to guarantee green space for the whole population; and a monumental axis crossed the city, lining up the great public buildings — the cathedral, the city hall, the Casa de Gobierno, the legislature — in a deliberate civic sequence.
Out of that design came the two nicknames that still follow the city: the 'City of Diagonals', for its characteristic oblique avenues, and the 'City of Linden Trees', for the rows of trees planted along its streets. La Plata thus became a case study in urban planning: a city thought out as a whole, where geometry, circulation and greenery were part of the project from the very first line drawn.
There is a layer of mystery around La Plata that sets it apart from any other Argentine city: the idea that its layout hides Masonic symbolism. The starting point is a documented fact: Governor Dardo Rocha and the engineer Pedro Benoit were both Freemasons, as was a large share of the professionals in the Department of Engineers who designed the city. Freemasonry, with its heavy symbolic charge and its historical link to architecture and geometry, would have left — according to this reading — its mark on the plan.
Those who hold this view point out that certain diagonals and crossings in the layout trace emblematic Masonic tools: the square, a symbol of moral rectitude, and the compasses, associated with justice and equality, along with other geometric figures such as triangles and circles. A few years ago the city was even declared one of the first recognized 'Masonic cities', and there are tours dedicated to decoding these supposed symbols in the plan.
Not all specialists share this view, which is why the subject is best treated for what it is: a fascinating hypothesis, with a historical basis in the Masonic membership of its founders, but hard to prove conclusively. Whether deliberate symbol or geometric coincidence, 'Masonic La Plata' has become a central part of the city's story about itself and one of its biggest tourist draws.
La Plata was born with the calling of a modern capital and quickly acquired cutting-edge institutions that turned it into a scientific and educational hub. Within a few years came the university, the astronomical observatory and the celebrated natural sciences museum, which went on to hold millions of items and to establish itself as one of the most important museums of its kind in Latin America, with its famous dinosaur skeletons and South American megafauna. The Paseo del Bosque concentrated much of that scientific and cultural life, along with the Teatro Argentino, the province's great home for opera and the performing arts.
Through the 20th century the city added milestones such as the República de los Niños — a pioneering theme park in the Americas, opened in 1951, which reproduces a scale city with its democratic institutions — and Casa Curutchet, the only built work by Le Corbusier in South America, today a World Heritage Site. The strong university presence gave La Plata a young character, with intense cultural activity, theaters, bookshops, cafés and nightlife.
But not everything in La Plata is science and planning: the city also has its legends. The most famous is the supposed 'curse' cast on the very day of its founding, a popular story according to which the founding ceremony was marked by a spell. These legends, together with the Masonic mystery of its layout, give La Plata an enigmatic dimension that coexists with its image as a rational, geometric capital. The city thus combines several identities: the model urban project, the scientific and cultural hub, and the place loaded with symbols and stories that still stirs curiosity.