Clusters of parasitic apartment units cling to the sides of the CN Tower in this conceptual proposal by Toronto studio Quadrangle. More about Toronto's CN Tower reimagined as residential high-rise covered in wooden pods
Designer Olalekan Jeyifous has created a dystopian vision of shanty-town towers in Lagos, Nigeria, to highlight the poor standard of living in the city's impoverished areas (+ slideshow). More about Designer Olalekan Jeyifous imagines vertical shanty towns for central Lagos
Global firm Gensler has proposed an alternative skyscraper concept for the waterfront site in Chicago where a spiralling, supertall condominium tower by Spanish architect Santiago Calatrava was slated to rise. More about Gensler unveils skyscraper design for site of Calatrava's ill-fated Chicago Spire
Anders Berensson Architects has unveiled conceptual plans for Stockholm's tallest building – a 133-metre wooden skyscraper covered in numbers, which would be erected on top of a 1960s car park in the city centre. More about Anders Berensson proposes wooden skyscraper with decorative facade for Stockholm
PLP Architecture and researchers from the University of Cambridge have revealed a concept for London's first wooden skyscraper – a 300-metre-tall addition to the Barbican housing estate. More about PLP Architecture proposes London's first wooden skyscraper at the Barbican
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 about Sunken "sidescraper" bordering New York's Central Park wins skyscraper competition
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 about KPF conceives futuristic new city quarter for archipelago in Tokyo Bay
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 about PLP's Nexus tower aims to offer alternative to standard skyscraper design
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 about MAD proposes conceptual "vertical village" for LA as alternative to sprawl
CRG Architects has unveiled a proposal to replace slum housing with a pair of skyscrapers comprising stacks of brightly coloured shipping containers. More about CRG Architects unveils concept for shipping container skyscrapers
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 about Adam Roberts proposes stacking traditional Kyoto dwellings to create "machiya towers"
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 about Humanoid columns support conceptual skyscrapers designed to never go out of style
Designer Dror Benshetrit has unveiled three proposals for residential towers on different sites in New York. More about Studio Dror's conceptual tower designs for New York offer three takes on high-rise architecture
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 about Designs unveiled for giant Rotterdam wind turbine you could live inside
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 about Cloud Capture is an imaginary flying machine for bringing rain to the desert
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 about Conceptual high-rise containing 11 landscapes wins eVolo Skyscraper Competition
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 about Shadow-free skyscrapers would redirect the sun's rays to public plazas
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 about Proposal unveiled for tornado-shaped skyscraper with a revolving rooftop restaurant
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 about Chunky tower covered in plants proposed for Taiwan's capital
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 about Conceptual skyscraper designed for London could house its own metropolis