US designers Yitan Sun and Jianshi Wu have proposed transforming Manhattan's Central Park into a sunken landscape encircled by a below-grade megastructure with office, housing, retail and cultural space. More
US-based firm Kohn Pedersen Fox has envisioned a new district in Tokyo that includes a mile-high skyscraper and infrastructure elements that will protect the city from natural disasters (+ slideshow). More
London-based PLP Architecture has revealed a masterplan for a project in China that includes a concept for a supertall tower composed of three rotated, interlocking volumes. More
Chinese firm MAD Architects has proposed a futuristic housing scheme for LA that features sculptural towers wrapped in gardens and connected by sky bridges. More
CRG Architects has unveiled a proposal to replace slum housing with a pair of skyscrapers comprising stacks of brightly coloured shipping containers. More
Graduate shows 2015: traditional machiya houses in the Japanese city of Kyoto are under threat from modern development, so Royal College of Art graduate Adam Roberts proposes stacking them up to make them more cost and space efficient (+ slideshow). More
Graduate shows 2015: human statues support the floors of these conceptual towers by graduate Alice Theodorou – part of a 10,000-year masterplan that anticipates nuclear war and city-wide flooding (+ slideshow). More
Designer Dror Benshetrit has unveiled three proposals for residential towers on different sites in New York. More
A team of Dutch companies has unveiled a proposal for a huge circular wind turbine that doubles as an apartment block and hotel, and also includes a rollercoaster. More
This conceptual airborne structure is designed to absorb moisture from clouds and transport it to arid regions where it would be released as artificial rain to combat future environmental disasters. More
A vision for a skyscraper containing swamps, mountains, glaciers and a jungle has been named the winner in a competition to come up with futuristic ideas for high-rise living. More
A concept for "shadowless" skyscrapers that redirect sunlight to public spaces could work for tall buildings anywhere in the world, say the London designers behind the proposal. More
Oklahoma firm Kinslow, Keith & Todd has presented its vision to build a skyscraper shaped like a tornado on top of a Tulsa parking garage. More
Architect Fernando Menis has developed a concept for a residential tower complex with rock-like walls, a cavernous swimming pool and plants growing out of every crevice. More
News: this competition-winning design by SURE Architecture envisions a futuristic skyscraper that could house an entire city – with its own ecosystem and a spiralling form that could be extended infinitely upwards. More
A conceptual design for a London skyscraper by Paris studio Chartier-Corbasson Architectes proposes using waste generated by workers already in the building to help construct new floors as demand grows. More
A mile-long street provides play space in this conceptual skyscraper by RCA graduate Elly Ward, which examines how children's experience of and contribution to city life can be enhanced (+ slideshow). More
German studio Tammo Prinz Architects has developed a concept for a residential skyscraper built from a stack of modular cubes and dodecahedrons (+ slideshow). More
![Synth[e]tech[e]cology by Chang-Yeob Lee](https://static.dezeen.com/uploads/2013/06/dezeen_Synthe-tech-ecology-by-Chang-Yeob-Lee_1sq.jpg)
Royal College of Art graduate Chang-Yeob Lee has developed a concept to transform the BT Tower in London into a pollution-harvesting high rise (+ movie). More
Swedish studio Belatchew Arkitekter wants to transform a Stockholm skyscraper into a wind farm by covering it in thousands of electricity-generating bristles. More