The developer of New York's Two World Trade Center tower, Silverstein Properties, is uncertain whether it will retain Bjarke Ingels Group for the project or go with original architect Foster + Partners. More about BIG and Foster both still in contention for Two World Trade Center tower
Spanish architect Santiago Calatrava has been chosen to create the United Arab Emirates' national pavilion at the Dubai Expo 2020, with a design modelled on bird's wings (+ slideshow). More about Santiago Calatrava selected to design UAE Pavilion for Dubai Expo 2020
French-Brazilian studio Triptyque has revamped a 85-metre-high office block in Rio de Janeiro with zigzagging glazing and solar panels so it can generate its own electricity (+ movie). More about Triptyque overhauls 1970s office tower in Rio to make it more environmentally friendly
Amsterdam collective Fiction Factory has developed a modular building system of cardboard components, which can be assembled in just one day to form houses or offices (+ slideshow). More about Fiction Factory builds prototype for "groundbreaking" cardboard house
This northern California cabin by Mork-Ulnes Architects is clad in tar-coated timber and sits atop a concrete plinth – measures that both help protect the structure from heavy snowfall. More about Mork-Ulnes completes California ski chalet coated in black tar
British designer Thomas Heatherwick's elevated park over the Hudson River has been given the go ahead by planners and will start construction this summer. More about Heatherwick's Pier 55 to begin construction over New York's Hudson River
With just over a month to go before London's Tate Modern opens its new Herzog & de Meuron-designed wing, Instagram users have been sharing images of the angular brick structure. More about Herzog & de Meuron's Tate Modern extension nears completion
This weathering steel staircase by engineering studio Close to Bone cantilevers off a hill in Flanders, forming an observation tower overlooking rolling farmland and the Kabouterbos forest (+ slideshow). More about Gravity-defying staircase by Close to Bone climbs up into the sky
Architect Sean Griffiths has unveiled plans to add a shed-inspired roof extension to the Blue House, one of the best-known projects of his former studio FAT. More about FAT's seminal Blue House set for rooftop extension
Zaha Hadid 1950-2016: Patrik Schumacher has paid tribute to the "empowering" and "unprecedented" architectural moves developed by his former partner Zaha Hadid, who died unexpectedly in March following a heart attack. More about Zaha "delivered an unprecedented expansion" of architectural style says Patrik Schumacher
American studio SAS Designbuild has completed a family dwelling in a historic Boston neighbourhood that reads as two separate homes due to its unusual facade treatment. More about SAS Designbuild combines two facade styles for an urban Boston home
Interview: San Francisco Museum of Modern Art reopens this month with a Snøhetta-designed extension to its original Mario Botta building. In this interview, Snøhetta partner Craig Dykers explains how he tried not to step on the toes of Botta's Postmodern structure. More about "We could never recreate Mario Botta's SFMOMA" says extension architect Craig Dykers of Snøhetta
Three fantasy house plans have been selected as the winners of the Design a Beautiful House competition: a marble-clad mansion, a subterranean lakeside dwelling and a linear property with faceted bays. More about Winners in beautiful house contest include marble walls and underground rooms
Knox Bhavan Architects has joined two flats in a converted school in south London, creating an apartment with spacious entertaining spaces and bedrooms that can be opened or closed (+ slideshow). More about Knox Bhavan Architects combines two flats in a converted London school
Arched openings in the sandstone facade of this Dubai mosque by Ibda Design lead worshippers into a bright marble courtyard with a textured minaret (+ slideshow). More about Ibda Design uses contrasting sandstone and white marble for mosque in Dubai
Architects office Mariusz Wrzeszcz has completed a single-storey house in Poland featuring cedar-clad walls, and a glazed living room that opens out to a spacious terrace (+ slideshow). More about Mariusz Wrzeszcz completes house in Poland with cedar walls inside and out
The zigzagging roof of this orphanage in Haiti is independent of its walls, allowing breezes to permeate the building and offer relief from the hot climate, as well as providing earthquake resistance (+ slideshow). More about Freestanding roof spans Haiti orphanage by Bonaventura Visconti di Modrone
Old doors and windows, antique wooden columns and metal drainpipes give this house in Mumbai an aesthetic its architects claim is inspired by the ramshackle buildings found throughout the city (+ slideshow). More about Reclaimed windows and doors form facades of Collage House by S+PS Architects
Dutch firm Studioninedots has renovated a 1970s office building in the Dutch city of Hilversum, removing sections of the existing walls and floors to create a four-storey void crisscrossed by steel staircases (+ slideshow). More about Studioninedots carves out an atrium inside overhauled 1970s office building
Tasked with building a treehouse in a garden without a tree, French studios Saperlipopette Les Architectes and Martial Marquet Architecture have created a wooden structure that instead perches on a wall (+ slideshow). More about Casa No Muro is a treehouse built on a wall instead of in a tree