Reading a City Through Its Doorways

Height and width tell you about goods

The first question to ask about any old door is what had to fit through it.

A double door with one small pedestrian leaf cut into the larger one — a wicket — means a building that needed to admit carts or animals but usually admitted people. You find these across merchant quarters from Andalusia to Anatolia, and their persistence into the twentieth century in a given street tells you the street kept its trade after others lost theirs.

Very tall, narrow doors on modest houses often mean upper-floor storage reached by hoist — grain, wool, salt cod. In Porto and in the Norwegian trading towns you can still see the hoist beams above them.

Hardware is dated more reliably than stonework

Stone façades get refaced. Hardware rarely does, because replacing a working lock is expensive and pointless.

• Hand-forged strap hinges running most of the door's width: pre-industrial, generally before 1800, and a sign the door has never been replaced wholesale.
• Cast-iron knockers in figurative shapes — hands, lions, dolphins — mass-produced from the 1830s onward. The Hand of Fatima in North Africa and southern Spain crosses religious lines and long predates its cast versions.
• Two knockers of different sizes, as in parts of Anatolia and Iran: a heavier one with a deep sound for male visitors, a lighter, higher-pitched one for women, so the household knew who should answer. This is one of the most legible pieces of social history available on any street.

A door with two knockers is a household telling you, permanently and in metal, how it organised the question of who opens it.

Colour is almost always regulated, formally or otherwise

The uniform door colours of postcard towns are rarely spontaneous.

In Dublin, the Georgian doors are famously varied and the standard explanations — a widow's protest, a way home when drunk — are folklore. The likelier account is that the terraces were built under leases specifying uniform brick and stone, leaving the door as the only surface an owner could personalise.

In Chefchaouen the blue is now maintained partly as an economic asset. In Burano, house colours are said to require permission from the local authority, which nominates the permitted shade.

The point is not that these are inauthentic. It is that colour uniformity is nearly always a rule — sometimes a lease covenant, sometimes a conservation code, sometimes just what the one paint supplier stocked.

Thresholds and what they defend against

The raised stone sill exists to keep water out, and its height is a flood record. In Venice, the progressive raising of thresholds and doorframes over the last century is visible on almost every canal-side building and is the most direct physical evidence of relative sea level change in the city.

Elsewhere, thresholds carry protective marks: apotropaic symbols scratched or burned into the frame to keep out harm. Daisy wheels and interlocking Vs are common in English and northern European vernacular buildings, usually near openings — doors, windows, chimneys — because those were the vulnerable points.

They are easy to miss and, once you know to look for them, surprisingly common.

What to photograph, and how

Three practical notes for anyone tempted to make a series of this, as many people are:

1. Shoot square-on. The value of a door series is comparative, and comparison needs a consistent angle. Step back and use a longer focal length rather than getting close with a wide lens.
2. Include the frame and the ground. The threshold, the step wear and the wall junction carry most of the information.
3. Photograph the ordinary ones. A street of forty doors will have three that are beautiful and thirty-seven that are informative.

And the courtesy: these are people's homes. If someone is in the doorway, ask. In practice the answer is nearly always yes and is frequently followed by an explanation you could not have got any other way.