US firm Barker Freeman Design Office has renovated a slender brick row house in Brooklyn and added a two-storey extension with a glass wall overlooking a garden (+ slideshow). More
Argentinian studio Adamo-Faiden has built a greenhouse-like structure over the top of a Buenos Aires residence, in its continuing bid to make better use of the city's vacant rooftops. More
A faceted golden nodule protrudes from one side of this art studio in Warsaw, providing a secluded meditation space for Polish sculptor Pawel Althamer (+ slideshow). More
The spaces behind the iconic illuminated signs of London's Piccadilly Circus are set to be occupied for the first time since the 1950s, as part of a renovation by Fletcher Priest Architects that includes a huge rooftop extension. More
Fibre-cement shingles cover this gabled barn in northeast France, which GENS: Association Libérale d'Architecture has converted into five apartments (+ slideshow). More
Melbourne architecture office Taylor Knights has renovated an existing Federation-style house in the city and added a contrasting contemporary extension that opens directly onto the rear garden (+ movie). More
Materials and interior details are used to clearly define the old and new parts of this family home in Windsor, UK, renovated by London studio TDO (+ slideshow). More
Lisbon architecture office Cais has renovated and extended an outdated house in the city, preserving its existing facade and creating an open-plan interior that extends into a new terraced garden at the rear (+ slideshow). More
Architect William Tozer applied Adolf Loos' Raumplan concept to this London house extension, which features several stepped levels that are all visually connected. More
Austrian architects Winkler + Ruck Architekten and Ferdinand Certov have been selected to create a "floating" roof extension for Vienna's Wien Museum. More
Architecture studio Freadman White has remodelled a 1930s Melbourne house that was extended in the 1970s, and created a new room featuring an angular roof (+ slideshow). More
London office Studio Octopi has returned to a house it renovated over five years ago to add a loft extension, creating a study and a reading room connected by a perforated steel staircase (+ slideshow). More
Architects office McGonigle McGrath has been granted planning permission to transform a heritage-listed war memorial building in Belfast, Northern Ireland, into a boutique hotel. More
Architecture studio Denizen Works has remodelled a north London house, transforming the "small dark bachelor pad" into a family home with a light-filled kitchen and dining space. More
A corridor framed by reclaimed bricks and glass separates this Melbourne house from a new extension built in the back garden by local architecture firm MODO (+ slideshow). More
Herzog & de Meuron has completed an extension to the Musée Unterlinden in Colmar, France, creating a new underground gallery accessed via a monumental cast-concrete staircase (+ slideshow). More
Studio 30 has transformed a terraced house in west London with a new loft bedroom and an enlarged family kitchen, both featuring walls that fold open to offer better views of a garden and nearby park (+ slideshow). More
A wooden boardwalk leads inside this timber-clad gym and spa building, designed by MacKay-Lyons Sweetapple Architects to accompany a residence on Nova Scotia's Atlantic coast (+ slideshow). More
Curving vaults create a scalloped roofline for this red brick house extension completed by Barcelona studio Mesura in Alicante, Spain (+ slideshow). More
A floor that doubles as a toy box and a vivid yellow bathtub both feature inside this remodelled Melbourne house by local studio Austin Maynard Architects (+ slideshow). More