Architecture studio Robert AM Stern Architects has completed an extension to the New York Historical museum in New York informed by the building's original design from the early 1900s. More about RAMSA completes sensitive extension of New York Historical museum
Australian studio MRTN Architects has completed Laneway House in Melbourne, extending a Victorian terrace with a "collage" of forms in red-toned brick, metal and timber. More about MRTN Architects extends Melbourne home with cluster of red-brick volumes
Architecture studio Herzog & de Meuron has transformed the industrial structure of the Titlis Tower in the Swiss Alps into a sculptural tourist destination with dramatic cantilevers and a panoramic viewpoint. More about Herzog & de Meuron transforms mountain antenna tower into "iconic sculpture"
Swiss architecture studio Herzog & de Meuron has revealed plans to update the Palace of Congresses concert venue in Tirana, Albania, with a 260-metre-tall skyscraper. More about Herzog & de Meuron to revitalise communist-era Palace of Congresses in Tirana
Brooklyn-based studio Out of Line has completed an attached accessory dwelling unit that extends a New Jersey suburban home by extending its colours and creating a gable form in the negative for the entryway. More about Out of Line adds playful ADU with "absent gable" to New Jersey house
A fluted wall wraps the curved exterior of this extension to the Maggie's centre at Cheltenham General Hospital, added as part of an overhaul by London studio Metropolitan Workshop. More about Metropolitan Workshop adds lozenge-shaped community space to Maggie's Cheltenham
Slender granite columns frame the glazed walls of this compact extension to a home in Dublin, completed by local studio Scullion Architects. More about Scullion Architects brings "romantic sensitivity" to elevated extension in Dublin
UK practice Studio Hallett Ike has completed the renovation and extension of a gothic-style lodge in the grounds of a London cemetery. More about Studio Hallett Ike updates and extends Victorian lodge in the grounds of a London cemetery
Architecture studio Rever & Drage has expanded a cluster of rural buildings in Norway, adding a barn-like form that steps up a sloping, rocky site. More about Rever & Drage extends smallholding in Norway with stepped barn-like volume
Local studio ODDO Architects has extended TH+ House in Vietnam, organising a series of shared, flexible spaces around tall voids informed by the "social intensity" of Hanoi's urban alleyways. More about ODDO Architects looks to urban alleyways for narrow extension in Vietnam
Local studio GS Architecture has completed its renovation and extension of a family home in Hampstead Heath, London, updating it to meet low-energy Passivhaus standards. More about GS Architecture retrofits Hampstead Passive House with "fabric-first approach"
Arizona-based studio Benjamin Hall Design completed an addition to a Phoenix house that hides in the landscaping to create a treehouse-like effect. More about Benjamin Hall expands Phoenix home with treehouse-like addition
Weathered steel shaped like a "pressed ribbon" frames the rear extension of this Victorian townhouse in London, renovated by local studio Will Gamble Architects. More about Will Gamble Architects frames Ribbon House extension with weathered steel
Architecture studio Goldstein Heather has transformed a Victorian terrace house in London, adding a four-storey extension with arched openings and a sculptural timber staircase. More about Goldstein Heather doubles London home's footprint with four-storey extension
In this week's comments update, readers are discussing the renovation of a 20th-century villa in Lviv by Ukrainian architecture studio Replus Bureau. More about "They should have embraced what they avoided" says commenter
Scottish studio Moxon Architects has extended a house in rural Aberdeenshire, adding two barn-like volumes that are clad in timber battens. More about Moxon Architects references farmsteads for Corriebeg house extension in Scotland
Architecture studio Kengo Kuma and Associates has won the competition to design a new wing for the National Gallery in London, which will be the museum's largest transformation in its 200-year history. More about Kengo Kuma appointed to extend National Gallery in London
Ukrainian architecture studio Replus Bureau has renovated a 20th-century villa in Lviv, contrasting the exposed surfaces of its historic shell with contemporary extensions and finishes. More about Replus Bureau avoids "nostalgic reconstruction" in Ukrainian villa renovation
Dublin studio Architectural Farm has renovated a home in Ireland called Seagull Cottage, adding a larch-clad extension informed by railway sheds and bird hides. More about Timber bird hides inform Irish cottage extension by Architectural Farm
Architecture studio Haworth Tompkins has updated and extended the Grade II-listed Theatr Clwyd in Wales, transforming the sprawling cultural centre into a "welcoming civic destination". More about Haworth Tompkins revitalises listed Theatr Clwyd