News: Swiss office Fruehauf Henry & Viladoms has been selected ahead of Kengo Kuma, Bernard Tschumi and Studio Mumbai to envision a new wing for the Musée du Léman on the edge of Lake Geneva (+ slideshow). More about Musée du Léman unveils extension proposal featuring concrete walls and a rooftop lawn
Studio Gil used a combination of exposed concrete and reclaimed iroko wood to unite the interior of this extension to a Victorian terraced house in east London with its redeveloped garden. More about Concrete extends from the kitchen into the garden of Studio Gil's London house extension
Robert Dye Architects has shifted the entire end wall of a mews house in London's Primrose Hill neighbourhood, as part of a renovation and extension designed to bring in more natural light (+ slideshow). More about Robert Dye Architects extends a London mews house by pushing out a wall
Czech studio 3+1 Architekti has added a zigzagging wooden extension over old stone walls to turn a former agricultural barn into a woodwork training centre (+ slideshow). More about Serrated timber extension by 3+1 Architekti transforms stone barn into woodwork facility
Shards of glazing frame views of the distant mountains from the apartments inside this angular attic extension in northern Italy, designed by Plasma Studio (+ slideshow). More about Angular windows create glass shards across Plasma Studio's Schäfer Roofscape
London firm Rogers Stirk Harbour + Partners has put the finishing touches to the World Conservation and Exhibitions Centre – a new £135 million wing at the British Museum in London (+ slideshow). More about Rogers Stirk Harbour + Partners completes new conservation and gallery wing at British Museum
A folded fabric canopy helps to shade the interior of this glazed extension to a nursery in Paris by local firm h2o Architectes (+ slideshow). More about Nursery extension by h2o Architectes enveloped by a folded fabric sunshade
Melbourne studio Clare Cousins Architects rearranged and extended a Victorian house in the city's St Kilda East district to create two wings for living and sleeping, either side of a dining space that opens out to the garden. More about Victorian house renovation by Clare Cousins features a courtyard dining room
Reflective stainless steel surfaces and a polished concrete floor brighten the interior of this extension to a terraced house in the Islington area of London by Architecture for London (+ slideshow). More about Architecture for London creates light-filled London extension using polished materials
A pulley system extending through the atrium of this house in Sydney, Australia, by local architects Tribe Studio, is designed so the owners can store bicycles and winch them out of view (+ slideshow). More about Bicycles are stored on a pulley system in Sydney house atrium by Tribe Studio
Recycled bricks, corrugated cladding and oak flooring were used to build this barn-inspired extension to a house in Melbourne by Australian studio Whiting Architects. More about Whiting Architects adds utilitarian extension to Melbourne residence
This top-heavy house extension in Trondheim, Norway, was designed by local office TYIN Tegnestue to maximise space on the first floor while minimising its footprint on the garden (+ slideshow). More about TYIN Tegnestue's lopsided house extension creates extra space upstairs
News: Herzog & de Meuron has unveiled designs for its fourth extension to the headquarters of insurance company Helvetia in the Swiss city of St Gallen. More about Herzog & de Meuron returns to St Gallen for fourth Helvetia office extension
Australian studio Wolveridge Architects ran a brickwork pathway through the inside and outside of this timber-clad extension to a house in Melbourne, using old bricks found in the garden (+ slideshow). More about Wolveridge Architects adds timber-clad extension to Northcote Residence
A 100-year-old house in Paris has been renovated and extended by local studio CUT Architectures to frame a garden facing the morning sun and create a shaded terrace overlooking a nearby park (+ slideshow). More about Red cedar clads extended Parisian house by CUT Architectures
Australian architecture office Iredale Pedersen Hook has renovated a 1930s property in Perth and added an angular rear extension that contrasts with the traditional street-facing facade (+ slideshow). More about Iredale Pedersen Hook updates a traditional Perth house with a faceted extension
Chris Dyson Architects has added a soot-washed brick extension with a curved wall to a Georgian terraced house and former nunnery in east London (+ slideshow). More about Chris Dyson's curved brick extension completes a Georgian terrace in London
The three pitched roofs of this bungalow extension in Manchester were designed by Blee Halligan Architects to capture sunlight at different times of the day and frame views of trees in the garden (+ slideshow). More about Blee Halligan's Triptych house extension catches sunlight from three directions
British firm John McAslan + Partners has converted a stone barn into a library and added a contrasting stained timber extension, as part of its redevelopment of a university campus in Cumbria, England (+ slideshow). More about John McAslan transforms a stone barn into a library for University of Cumbria
Canadian studio Naturehumaine inserted a glass floor and skylight to draw sunlight through the interior of this two-storey house in Montreal, and reintroduced wooden boards to make a feature of the staircase. More about Montreal house by Naturehumaine features a glass floor with a skylight overhead