HistoryLayer
Guide

How to read the atlas

← Back to the map

Fifty-four maps of the world, from 123,000 BCE to 2026, with the events, people and wars of each period pinned in place. This page is how to move through them — and, at the end, how to tell what the atlas knows from what it is guessing.

Where everything is

Four regions, and almost every control belongs to one of them.

HEADER 1715 CE Early modern Prehistory · Classical · Medieval · Early modern · Modern scrub within one era Search / Map & filters Events · People · Wars nine category chips Plain / Detailed + SIDEBAR 1715 CE Siege of Souda 1715 CE Bourbons take Majorca 1715 CE Tsar Peter's fleet
The header owns time; the map owns place; the sidebar owns whatever you have opened. The floating panels sit over the map because everything in them changes what the map draws.

Moving through time

The ruler is the whole of history. The bar beneath it is one era, opened out.

The ruler
Drag the playhead, or click anywhere along it. The banded strip above names the eras; the marks below are years with written accounts in them.
The fine bar
Opens the era you are standing in, so a single year is reachable. Home and End jump to its two ends.
Typing a year
Type into the year readout. There are fifty-four maps, not two thousand, so 1776 shows you 1783 — and says so.
Step the year. Hold Shift to move by the bar's own tick.
The atlas never renders a year it does not have. When it substitutes, the sidebar says which map you are actually looking at and which year you asked for. A silent nearest match would be a lie told politely.

The list beside the map

The sidebar always describes what is on screen: this period, this viewport, and whatever you last opened.

Click a row
Opens the record in the sidebar and flies the map to it.
Open in full
The beside the ✕, or the button at the foot of a record. The full view carries the written account, the pictures and the sources.
Step through the list without leaving the keyboard.
Enter
Goes one step further in, wherever you are.
Esc
Backs out the way does — to the region you came in from, rather than always to the year.
Inside a record
walk to the record before and after it in time. They ask the database, so they step to the true neighbour rather than to the nearest one that happens to be loaded.

The map

Clicking asks a question of the ground, and everything on screen answers it.

Click a country
Selects it and narrows the whole screen to it — the pins, the people, the war shading, the cities and the labels. The borders stay drawn, so the selection still has a world around it.
Click it again
Frames it, but only when that takes you closer. Already zoomed in past it, and the map leaves you where you are.
Click a pin
Opens that record. A numbered pin is a cluster; clicking spreads it.
Plain or Detailed
Plain is countries and the places that name them. Detailed adds provinces and districts, far more places, and the rivers and lakes.
Zoom
Scroll, or the buttons at the map's edge; the third returns the whole world.

Finding one thing

Twenty-four thousand events, twelve thousand lives and eight hundred wars. The search box is how you reach a particular one.

Open it
/ or ⌘ K. ⌘ F opens it too — the browser's own find would search only the forty rows that happen to be rendered.
What it searches
Events, people, wars, places, polities and years, across the whole atlas.
Choosing a result
Takes you to its year and its place. Finding Avicenna by moving only the clock would leave you looking at the wrong continent.

Making it yours

Layers
Events, People and Wars — what is drawn at all.
Filters
Nine categories: War, Politics, Society, Art, Science, Religion, Economy, Exploration and Disaster. They reach the people too — a life is filed by the first of its occupations that matches, so switching off War takes the generals with the battles.
Saving
The star on any event or person. Saved records get their own list and show as marks along the ruler. Needs an account.
Notes
Your own writing on a record, private to you.
Light and dark
Follows the clock — dark from six in the evening. Choosing for yourself wins for twelve hours and then lapses, so nobody is handed a dark map at ten in the morning.

What the atlas admits it does not know

Historical borders are disputed, and most of them were never surveyed. Rather than footnote that, the map draws it.

FIXED BY TREATY One line. We know where it ran. APPROXIMATE FRONTIER A band. Somewhere in there.
The coastline is drawn at the same weight in both, because we do know where the coast was. Softening it too would read as a broken renderer rather than as honest doubt.

Three other admissions

Written or imported
A few hundred records carry an account written for this atlas. The rest were imported in bulk and are marked as such — a single line rather than a page, and not checked by hand.
Unnamed ground
Territory the source does not name is left neutral and labelled unattributed, rather than coloured in as though it were known.
Counts are counts
Where a list is capped it says so. A number here is never a display limit wearing a total's clothes.

Every key

KeyDoes
/ or ⌘ KOpen search
⌘ FOpen search, in place of the browser's find
Step the year; Shift steps further
Home EndThe two ends of the fine bar
Move through the sidebar, or the search results
EnterGo one step further in
EscBack out of whatever is open
in a recordThe record before and after it in time
in a pictureThrough the pictures on that record

Still stuck, or found something wrong on the map? Get in touch — one person reads those.

Where the maps and the records come from is on the sources and licences page. What this site stores is on the privacy page.