Screw it, here's a map of Paris superimposed on London

Aww, look at the cute little thing. Maps of Paris and London taken from Google Maps.

Paris, as we may have mentioned before, is surprisingly small. It has a population of only 2.3m, which isn't that many for one of the great cities of the world. It's also only six miles across. This is a case of “underbounding”: a situation in which the formal limits of a city are far smaller than its functional area, which

a) creates a whole load of problems for the people who govern a metropolitan area, and

b) stops lovely family cities websites from make any sensible statistical comparisons.


Anyway. Because it's Friday afternoon, we decided to kick back, relax, and super-impose a map of Paris onto London, to give you some sense of exactly how small Paris really is.

We've placed the Île de la Cité, the historic heart of Paris, on London's Trafalgar Square, in an attempt to align the centres of the two cities. You can see the results above.

Imposed on London, the Périphérique ring road, which forms the border of Paris proper in most places, crosses the Thames roughly at the Battersea Bridge and the Rotherhithe tunnel. The city stretches south to the borders of Brixton, and north to those of Holloway. Its westernmost outpost is around Wormwood scrubs; its east is at Greenwich. Montmatre sits above Camden Town.

So, yes, Paris is small – smaller than inner London, and not much bigger than its old rival’s central business district.

Except, this isn't really the whole of Paris, is it? It's the official city limits, yes. But any sensible definition would include the suburbs lying beyond the Périphérique, that are economically dependent on the city itself.

The French government has, belatedly, realised this, and from next year there will be a whole new body: the Metropole du Grand Paris, which will cover the whole urban region. At time of writing the exact boundaries that will have are a bit hazy – so, we've used this map to super impose the city's entire urban area on the London region too. (The red patch at the centre is the city proper.)

That looks much more like it – suddenly, London is all but invisible.  Greater Paris will actually be bigger than Greater London, once the deed is done.

That will help to reintegrate the banlieues and, hopefully, make the city work better.

So there we have it. Join us next week on CityMetric when we'll be firing up our trusty copy of Microsoft Paint once again and asking: Who would win in a fight – the Incredible Hulk or Superman?

 
 
 
 

This fun map allows you to see what a nuclear detonation would do to any city on Earth

A 1971 nuclear test at Mururoa atoll. Image: Getty.

In 1984, the BBC broadcast Threads, a documentary-style drama in which a young Sheffield couple rush to get married because of an unplanned pregnancy, but never quite get round to it because half way through the film the Soviets drop a nuclear bomb on Sheffield. Jimmy, we assume, is killed in the blast (he just disappears, never to be seen again); Ruth survives, but dies of old age 10 years later, while still in her early 30s, leaving her daughter to find for herself in a post-apocalyptic wasteland.

It’s horrifying. It’s so horrifying I’ve never seen the whole thing, even though it’s an incredibly good film which is freely available online, because I once watched the 10 minutes from the middle of the film which show the bomb actually going off and it genuinely gave me nightmares for a month.

In my mind, I suppose, I’d always imagined that being nuked would be a reasonably clean way to go – a bright light, a rushing noise and then whatever happened next wasn’t your problem. Threads taught me that maybe I had a rose-tinted view of nuclear holocaust.

Anyway. In the event you’d like to check what a nuke would do to the real Sheffield, the helpful NukeMap website has the answer.

It shows that dropping a bomb of the same size as the one the US used on Hiroshima in 1945 – a relatively diddly 15kt – would probably kill around 76,500 people:

Those within the central yellow and red circles would be likely to die instantly, due to fireball or air pressure. In the green circle, the radiation would kill at least half the population over a period of hours, days or weeks. In the grey, the thing most likely to kill you would be the collapse of your house, thanks to the air blast, while those in the outer, orange circle would most likely to get away with third degree burns.

Other than that, it’d be quite a nice day.

“Little boy”, the bomb dropped on Hiroshima, was tiny, by the standards of the bombs out there in the world today, of course – but don’t worry, because NukeMap lets you try bigger bombs on for size, too.

The largest bomb in the US arsenal at present is the B-83 which, weighing in at 1.2Mt, is about 80 times the size of Little Boy. Detonate that, and the map has to zoom out, quite a lot.

That’s an estimated 303,000 dead, around a quarter of the population of South Yorkshire. Another 400,000 are injured.

The biggest bomb of all in this fictional arsenal is the USSRS’s 100Mt Tsar Bomba, which was designed but never tested. (The smaller 50MT variety was tested in 1951.) Here’s what that would do:

Around 1.5m dead; 4.7m injured. Bloody hell.

We don’t have to stick to Sheffield, of course. Here’s what the same bomb would do to London:

(Near universal fatalities in zones 1 & 2. Widespread death as far as St Albans and Sevenoaks. Third degree burns in Brighton and Milton Keynes. Over 5.9m dead; another 6m injured.)

Everyone in this orange circle is definitely dead.

Or New York:

(More than 8m dead; another 6.7m injured. Fatalities effectively universal in Lower Manhattan, Downtown Brooklyn, Williamsburg, and Hoboken.)

Or, since it’s the biggest city in the world, Tokyo:

(Nearly 14m dead. Another 14.5m injured. By way of comparison, the estimated death toll of the Hiroshima bombing was somewhere between 90,000 and 146,000.)

I’m going to stop there. But if you’re feeling morbid, you can drop a bomb of any size on any area of earth, just to see what happens.


And whatever you do though: do not watch Threads. Just trust me on this.

Jonn Elledge is the editor of CityMetric. He is on Twitter as @jonnelledge and also has a Facebook page now for some reason. 

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