Your global leading expert in floating architecture and urban development.


We design, research and realize floating projects in delta cities world-wide. Our belief is that we must shift from sustaining our planet to restoring it. Floating development can make cities more resilient, creates space for new eco-systems and enables bio-based economies to flourish.


Do you see the potential of floating for your company, city, or municipality but don’t know where to start?




What's New

Present at World Conference on Floating Solutions 2019 in Singapore

On the 23rd of April, co-founder of Blue21, Karina Czapiewska, will give a presentation on “Potential of Floating Urban Development […]

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Floating cities exhibition at WUHO gallery in LA

Happen to be in Los Angeles after April 13th? Drop by the WUHO gallery and have a look at the […]

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Blue21 presenting at symposium: "2050 Looking Back" in Rotterdam

Have you ever wondered what our world would look like in 2050? Where and how would we live in the […]

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Built artificial islands to take off

This autumn Blue21 was featured in Le Monde. The article elaborates on seasteading and [email protected], quoting Blue21’s architect and CEO Bart Roeffen: “We […]

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