Washington is a city drawn before it existed.
The plan was signed in 1791 over empty ground and engraved the following year: a grid, diagonals laid over it and four quadrants meeting at a single point. The city was built afterwards, following it.
01 A city drawn before it existed
The commission was unusual: to lay out an entire capital on practically empty ground. Pierre Charles L'Enfant signed it in 1791, and the following year Andrew Ellicott prepared the version that was engraved and printed, the one that circulated and was eventually built.
That makes this city a rarity in the Americas. Almost every capital on the continent grew out of a port, a mine or a mission; this one began as a plan on paper with the streets already numbered.
You feel the result when you walk it: the proportions are enormous for a pedestrian, the avenues are extremely wide and the vistas are calculated. This is not a city that became big, it is a city that was drawn big.
02 A grid with diagonals laid over it
The structure has two superimposed layers. Underneath there is an orthodox grid: lettered streets one way and numbered streets the other, so that any junction names itself, as on a board.
Over that, diagonal avenues were drawn cutting the grid at an angle, each named after one of the country's states. Their purpose was not decorative: they linked in a straight line points that the grid forced you to go around.
For a visitor that produces the city's most characteristic effect: you can go straight for kilometres and then suddenly meet a triangular block and a round plaza in the middle of the way.
03 Four quadrants and a zero point
The plan also has a zero point. The city is divided into four quadrants that meet at the Capitol building, and every address carries the initials of the quadrant it belongs to.
That is not a minor detail for a newcomer. The same combination of street and number exists up to four times in the city, once per quadrant, so an address without those two final letters is incomplete.
The quadrants are not the same size either, because the origin point is not at the geographic centre but where the plan decided to put it. The northwestern one is by far the largest.
04 The plazas come from the crossings
Where the diagonals cross each other or the grid, the plan did not leave a traffic knot: it left a plaza. That is where the circles and landscaped squares scattered across the city come from, each with its fountain or monument.
They work as the city's real landmarks. Neighbourhoods are named after them, transport is organised around them, and they are where the monumental scale finally becomes liveable.
If you have to choose one place to understand how this city lives rather than how it presents itself, choose one of those circles in mid-afternoon, with people sitting on the edge of the fountain.
05 What survives of the plan
The plan was not followed to the letter: the city took more than a century to fill it, and much of what you see today on the central axis was completed well into the twentieth century. But the geometry was respected.
That explains an odd sensation on arrival. With almost seven hundred thousand inhabitants, the city feels smaller than it is, because the plan imposes an enormous central void and a scale that does not match its population.
Walking it with the 1792 plan in mind changes the trip. It stops being a series of separate buildings and becomes what it is: an eighteenth-century drawing that somebody finished building.
