We are Blue21, starting a Blue Revolution

How? By realizing floating cities with a positive impact on the planet. Because we believe that this way we can solve the biggest challenges of the 21st century: land scarcity, climate change, urban growth, and deforestation.


We know it’s possible

But we can’t do this alone. That’s why we are a social enterprise and collaboration platform.
About us

ready to make waves?

Together we can start the Blue Revolution of the 21st century.

What's New

How Cities Will Save the Rainforest With Floating Production!

We’re pleased to share the Seasteading Institute(TSI)’s Guest Blog article written by Rutger De Graaf-van Dinther. Rutger is the co-founder of […]

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MARIN tests first floating mega island

Image source: MARIN In co-operation with Blue21, MARIN has carried out some impressive tests last week! Please read MARIN’s press […]

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'Floating cities likely to become reality in 5 years' - interview Blue21 at BNR Nieuwsradio

On June 20th, BNR Nieuwsradio Eyeopeners broadcast an interview with Bas Buchner, Director of MARIN (Maritime Research Institute Netherlands), and […]

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Collaboration with MARIN: exploring the potentials of floating city design and connections

        Image source: MARIN   Blue21 has recently collaborated with MARIN, Maritime Research Institute Netherlands, to bring […]

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