The European Union uses something called the Nomenclature of Territorial Units for Statistics (or NUTS) in order to geographically subdivide its member states and collect statistical data. There are three scales: NUTS 1, 2, and 3. And generally speaking, they follow existing administrative boundaries. Or at least that's the goal.
In addition to being used for collecting statistical data, they also form the basis for how the EU implements its "cohesion policies", which are designed to direct funds toward less developed regions within the Union based on GDP per capita (PPP).
Because these NUTS impact funding allocations and because they can be redrawn if certain criteria are met, there's not surprisingly an incentive to gerrymander. The Pudding has a great visual essay that explains why this happens and how Hungary split its central region into two new ones, isolating its capital, Budapest.
Big cities tend to be, of course, more developed than their surrounding areas. But it is interesting to see by how much. Though an extreme outlier, the Inner London - West region has a GDP per capita that is 625% the EU average (2017 numbers).
Wired's oral history of how the London startup scene came to be is a good reminder that, typically, a city needs some great big exits (acquisition or IPO) to really kickstart an ecosystem. In the case of Silicon Valley, you could perhaps trace things back to Fairchild Semiconductor (1950s). But a more recent example of this phenomenon would be the PayPal Mafia, whose members have gone on to found Tesla, LinkedIn, YouTube, and other companies that you may have heard of.
Put simply: success begets success. When a startup does really well and the founders and employees of that company get rich, it is likely that many will go on to found/fund other successful companies in that same city. In the case of London, that catalytic startup was arguably Skype (at least according to Wired). Microsoft acquired the company in 2011 for $8.5 billion, giving birth to the Skype Mafia. Of course, that wasn't the only ingredient, but it sure helped (excerpt from Wired):
Since 2008, according to data compiled by Dealroom.co, the UK has created 60 unicorns (tech companies valued at $1bn or more) – 35 per cent of the 169 created across Europe and Israel. In the past three years, the UK has created more unicorns (25) than France, Germany, the Netherlands and Sweden combined (19). And London has produced 23 unicorns with a combined value of $132bn, compared with Berlin’s eight, worth $32bn.
The world has changed since Skype was founded. It's now cool to be doing a startup. But given that every city seems to be trying to establish a thriving startup scene, I think it's valuable to point out just how important a single big exit can be, not just for the people within the company, but for the broader city. Easier said than done, right?
What they were trying to uncover was a possible relationship between climate change and single-family home pricing in places, like Miami, that are vulnerable to sea level rise and flooding. This phenomenon is colloquially referred to as "climate gentrification."
One of the things that they uncovered through their work was, in fact, a positive correlation between the rate of price appreciation of single-family homes in Miami-Dade County and incremental measures of higher elevation. In other words: there's value in higher ground.
Recent reports (like this one from the WSJ) that Little Haiti in Miami is experiencing a surge in investment, seem to, at least partially, support this finding. Little Haiti sits about twice as high as Miami Beach, which is only about 4 feet above sea level.
Here is a diagram from the WSJ showing the change in home prices since 2018:
I'm not sure that this diagram necessarily reinforces the above finding. Mid-Beach in Miami Beach is shown as having an 8% gain, and yet it sits, like pretty much the rest of the Beach, within a 100-year floodplain. But already Miami is looking to manage the impacts of, "gentrification that is accelerated by climate change."