Architecture firm Gensler have released a conceptual proposal for a new floating airport for London, located in the Thames Estuary with terminals connected by underwater tunnels. More about London Britannia Airport by Gensler
This series of hand drawings by Bartlett School of Architecture graduate Ned Scott presents a science-fiction world in which London grows a jungle of crops for fuel and food next to Buckingham Palace. More about The War Rooms, St. James's Park by Ned Scott
Tornados would pose no threat to this conceptual house by architects 10 Design, which can tuck itself beneath the ground just like a turtle retracts its vulnerable head away from danger (+ movie). More about Tornado Proof House by 10 Design
Algae would produce energy and clean water for a conceptual skyscraper proposed for London by British architect Dave Edwards. More about FSMA Tower by Dave Edwards
This conceptual skyscraper by Brazilian architects Projeto Coletivo would be constructed using rubbish in the city of São Paulo. More about Scrap Skyscraper by Projeto Coletivo
The stark concrete exterior of many of London's postwar housing blocks could be made more attractive with thatching, proposes architecture student James Kirk (+ movie). More about London Thatch by James Kirk
This movie by Jonathan Gales of architectural animation studio Factory Fifteen imagines the whole of London as a construction site, caught in a state of change that could mean dramatic decay or intensive development. More about Megalomania by Jonathan Gales
A spiky kindergarten and a bulbous sports centre with rooftop funnels are included in this conceptual community by architecture students at Lund University, Sweden. More about Lilla Råby by Anahita Nahoomi, Lina Davidsson, Miranda Westfelt and Robert Janson
If you're not worried about where you go or how fast you get there, this enormous inflatable cloud is the mode of transport for you. More about Passing Cloud by Tiago Barros
Architecture graduate Stephan Sobl has designed an upside-down skyscraper to hang over the Colorado River in Nevada, right beside the Hoover Dam. More about Vertical Strip by Stephen Sobl
Rotterdam studio STAR Strategies + Architecture have photoshopped green walls over images of iconic buildings to poke fun at the way architects believe cladding a building in plants makes it sustainable. More about O’ Mighty Green by STAR Strategies + Architecture
These conceptual images by Spanish studio Espai MGR show impossible Lego structures filling vacant neighbourhood plots in Valencia. More about Habit Makes Us Blind by Espai MGR
Architecture students Felix de Montesquiou and Hugo Kaici have designed the headquarters for a conceptual company that would help customers migrate illegally from Europe to the UK. More about Northern Europe Migrants Organisation by Felix de Montesquiou and Hugo Kaici
Belgian architect Vincent Callebaut has designed a conceptual transport system that would involve airships powered by seaweed. More about Hydrogenase by Vincent Callebaut
New York designers Studio Lindfors have created a series of images imagining how New York and Tokyo might look like in a few hundred years as a result of rising sea levels. More about Aqualta by Studio Lindfors
San Francisco architects IwamotoScott have won a competition to propose a futuristic vision of their city, organised by the History Channel. More about Hydro-Net by IwamotoScott