Japanese designer Tokujin Yoshioka has revealed his own vision for the Tokyo 2020 Olympic stadium, which he was not permitted to enter into the design competition (+ movie). More about Tokujin Yoshioka reveals alternative vision for Tokyo Olympic stadium
Rem Koolhaas' firm has revealed plans to overhaul continental Europe's largest department store, with the addition of a glass rooftop extension and a series of sculptural new staircases (+ slideshow). More about OMA unveils major renovation plans for Berlin's KaDeWe department store
London Eye designer Marks Barfield Architects has reached the final stage in its construction of the UK's highest observation tower outside the capital (+ slideshow). More about "World's first vertical cable car" to open on Brighton beach in summer 2016
London studio Flanagan Lawrence has won a competition to refurbish an outdoor theatre in Szczecin, Poland, with plans to add an arched roof made from inflatable panels (+ slideshow). More about Flanagan Lawrence to update Polish summer theatre with new inflatable roof
The next big US project for Bjarke Ingels' firm could be an American football stadium for the Washington Redskins. More about BIG in the running to design American football stadium
Rounded windows and skylights allow daylight to filter into this Parisian swimming pool by Mikou Studio, which features a grassy rooftop solarium (+ slideshow). More about Mikou Studio completes Paris swimming pool designed using Feng Shui philosophy
Architects Ifat Finkelman and Deborah Warschawski have built a slatted wooden structure around an old pine tree to update a courtyard space at the Israel Museum in Jerusalem (+ slideshow). More about Treehouse installed in Israel Museum playground by Ifat Finkelman and Deborah Warschawski
South Korea's Studio Koossino created a concrete building with white and yellow protrusions to provide shared workspaces for an artists' community north of Seoul (+ slideshow). More about Maxcube by Studio Koossino houses creative workspaces within concrete walls
A screen of vertical white louvres meanders around these facilities for campers in central Portugal, designed by Lisbon studio Atelier Rua (+ slideshow). More about Atelier Rua screens Portuguese campsite facilities with white slatted facade
Zaha Hadid has accused Japanese authorities and architects of colluding over the Tokyo 2020 Olympic stadium project, and says that Kengo Kuma's replacement design has "remarkable similarities" to her own. More about Zaha Hadid accuses Japanese government and architects of collusion over Tokyo stadium
Japanese officials have selected a wooden lattice design by Kengo Kuma for the new National Stadium in Tokyo, which will be the centrepiece for the 2020 Olympics. More about Kengo Kuma beats Toyo Ito to win Japan National Stadium competition
Barcelona studio BCQ chose translucent plastic panels for the walls of this municipal sports hall in Spain, giving the building an ethereal quality that helps it match the colours of the sky (+ slideshow). More about BCQ completes sports hall with translucent polycarbonate skin
Designer Thomas Heatherwick has won planning permission to convert a Victorian coal yard in London's King's Cross into a canal-side shopping destination. More about Heatherwick gets go ahead for canal-side shopping centre in London's King's Cross
A 101-metre slide winds down through this coiling structure by Fránek Architects, perched on a mountain in the Czech Republic (+ slideshow). More about Fránek Architects' mountainside Sky Walk loops up around a giant slide
The Tower of London's famous resident ravens have a new home in a set of oak and mesh-encased aviaries designed by local firm Llowarch Llowarch Architects (+ slideshow). More about Llowarch Llowarch Architects completes raven enclosure for the Tower of London
A flight of stairs wraps around the exterior of this mixed-use concrete tower in Seoul's busy Gangnam district, freeing up prime rental space on the ground floor (+ slideshow). More about Sae Min Oh designs irregularly shaped block in Seoul as a "three-dimensional street"
Architecture office NBBJ has unveiled a concept for a series of natural ice rinks on London's River Thames that emerge from below the water's surface. More about Flower-like ice rinks proposed for London's River Thames
Vietnamese studio Vo Trong Nghia Architects has built a community centre of eight pavilions, each with intricate bamboo structures and thatched rooftops (+ slideshow). More about Vo Trong Nghia creates bamboo and thatch domes for Diamond Island Community Centre
Brazilian architect Isay Weinfeld has been commissioned to convert The Shore Club, a historic hotel in Miami's South Beach, into a luxury complex with condominiums, hotel rooms and poolside bungalows. More about Isay Weinfeld unveils latest designs for update of historic Shore Club in Miami's South Beach
US firm Aranda\Lasch has completed a store for fashion designer Tom Ford in the Miami Design District, featuring an angular facade that references bold Art Deco motifs (+ slideshow). More about Aranda\Lasch creates pleated concrete facade for Tom Ford flagship Miami store