TWO/BO Arquitectura and architect Luis Twose have converted a sixteenth-century Catalan house into a business academy for a pharmaceutical company. More about Grifols Academy by TWO/BO Arquitectura and Luis Twose
Italian architects EM2 have converted a castle into a mountain museum. More about Messner Mountain Museum Peoples by EM2
Spanish architects MX_SI have won a competition to design an extension to a Finnish museum of art with this proposal that features recessed zigzagging windows. More about Extension to the Serlachius Museum Gösta by MX_SI
Moss is expected to grow on the perforated aluminium skin of this museum extension in San Sebastián by Spanish studio Nieto Sobejano Arquitectos. More about San Telmo Museum Extension by Nieto Sobejano Arquitectos
Photographer Roland Halbe has sent us these images of an extension to a museum inside a ruined castle in Halle, Germany, by Spanish studio Nieto Sobejano Arquitectos. More about Moritzburg Museum Extension by Nieto Sobejano Arquitectos
French practice Moussafir Architectes have completed this refurbishment and extension of a house in the Parisian suburbs, adding deep larch wood window frames. More about Maison Leguay by Moussafir Architectes
Architects Ooze of Paris and Rotterdam extended this Rotterdam residence by wrapping a new faceted skin over the house's existing collection of buildings and extensions. More about Villa Rotterdam by Ooze
Portuguese firm A+R Arquitectos installed this staircase with floating wooden treads and a zig-zag hand rail as part of the renovation of a Portuguese house. More about PAC House by A+R Arquitectos
Argetinian studio Adamo-Faiden have installed a fabric tensile structure across the roof of this renovated apartment in Buenos Aires, Argentina. More about Núñez House by Adamo-Faiden
David Mikhail Architects won the New London Architecture's Don't Move, Improve! competition with this project extending a London terraced house by just one metre. More about Hoxton House by David Mikhail Architects
This extension to a family house with marble brise-soleils on the rear façade in New South Wales, Australia, is by Australian practice Carter Williamson Architects. More about Balmain House by Carter Williamson Architects
This extension to a mill-keeper's house on the Norfolk Broads by London studio Acme has been awarded the RIBA Manser Medal 2010 for the best new house in the UK. More about Hunsett Mill by Acme
English architect John Glew has introduced new fenestration and a zinc-clad extension to this mock-Georgian house in north London, squeezing the new structure into a wedge of land between the house and its neighbour. More about 51A Gloucester Crescent by John Glew
Buenos Aires architects Estudio BaBO have completed an extension to a townhouse in Buenos Aires, Argentina, where a modern rectangular structure sits on top of the original early twentieth-century building. More about Vol House by Estudio BaBO
Paterson Architects of Scotland have completed a timber-clad extension to a farm cottage on a hill in Aberdeenshire. More about House on a Hill by Paterson Architects
Melbourne office Architects EAT have completed an extension to a house in Canterbury, Australia, suspended above the ground on steel columns. More about Elm & Willow House by Architects EAT
London architects Studio Octopi have completed an extension to a Victorian end-of-terrace house in north London that features an angular roof and large triangular skylights. More about Park Avenue South by Studio Octopi
Greek architects KLab Architecture have completed an extension to a bar in Athens with a facade clad in rusted steel. More about Bar Guru Bar by KLab Architecture
Australian practice Iredale Pedersen Hook Architects have completed the renovation and extension of a private home in Perth, Australia. More about Swan Street Residence by Iredale Pedersen Hook
Amsterdam architects O+A have completed an extension to a villa near Eindhoven in the Netherlands. More about Villa extension by O+A