San Diego is in desperate need of a new airport, but no one wants it near their land. The so-obvious-that-you'll-slap-your-forehead solution? Don't build it on land; the ocean's right there. There's even a plan, but it's more than an airport.
The idea comes from a guy named Adam Englund, but it's definitely not just a floating airport. It's an entire $US20 billion business plan. He's dreamed up an airport on an "oil rig-style floating platform" with four storeys of space, a total of 18,580,000 square metres of it, which could be used for hotels, restaurants, even universities. An entire floating city.
It sounds insane, but apparently in initial reviews, Englund's plan lacks any "fatal flaws". I'd consider the absence of $US20 billion a fatal flaw, but the man's a bigger optimist than I. [Infrastructurist via Stoke Report]