Imagine an interconnected island of prefab blocks, floating in the middle of the ocean. Connected by tunnels and submarines, this marine city will — apparently — offer everything you'd expect to find in a modern metropolis: entertainment, offices, residential areas, parks and even factories and farms. This is yet another incarnation of the "floating city" concept that's been, ahem, floating around for some time now.

As reported over at Fast Company, the floating city is being touted as a potential solution for China's rapidly urbanizing population:

As China prepares to squeeze in 350 million new urban residents over the new decade, the government will pave 5 billion square meters of new roads and build hundreds of new cities and towns. And as available land space gets smaller and smaller — especially near the bigger metropolitan regions where people really want to live — China may also start building cities on water.
Designed by AT Design Office, the concept is being developed, initially in a smaller pilot phase, by Chinese construction firm CCCC. And in yet another sign that China is beginning to understand how fossil fuel use may constrain its growth, the whole project is steeped in the concepts of self-sufficiency and clean energy. From tidal energy through electric cars to waste-to-energy onsite, there are some promising signs that this island will indeed prove more sustainable than many of its on-land predecessors. 

floating city artist's concept

The concept looks impressive and, with CCCC already constructing a 31-mile bridge between Hong Kong and Macau using the same technology, this isn't entirely in the realm of science-fiction. It's worth noting, however, that previous attempts at futuristic green cities in China didn't quite live up to the developers' hype

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