News: Frank Gehry has unveiled his masterplan to overhaul and expand the Philadelphia Museum of Art by adding underground galleries that won't disturb the architecture of the existing Beaux Arts building (+ slideshow). More about Frank Gehry reveals "under the radar" refurb for Philadelphia Museum of Art
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
London practice Adam Richards Architects has refurbished a museum in the English village of Ditchling, adding pitched-roof structures to connect the buildings with a converted cart lodge containing a new entrance (+ slideshow). More about Adam Richards Architects unites old and new at Ditchling art and craft museum
News: the V&A Museum will collaborate with developer China Merchants Group on content for the Shekou Museum in Shenzhen designed by Tokyo architect Fumihiko Maki. More about Fumihiko Maki designs China's "first major museum of design"
News: Danish firm BIG has been commissioned to expand the headquarters of Swiss watchmaker Audemars Piguet by adding a spiralling museum that coils up from the landscape (+ slideshow). More about Bjarke Ingels unveils spiralling museum for Swiss watchmaker
Dutch studio MVRDV has transformed a neoclassical chapel into the main entrance for a museum of modern art in Schiedam, the Netherlands, adding bright red shelves between the listed building's existing features (+ slideshow). More about MVRDV converts a chapel into an entrance for the Stedelijk Museum Schiedam
Artist duo Sofie Lachaert and Luc d'Hanis have recreated a terrace of workers' cottages to house an exhibition of their work at Belgium's Grand-Hornu Images museum (+ slideshow). More about Sofie Lachaert and Luc d'Hanis build temporary housing terrace for exhibition
News: a Snøhetta-designed pavilion marks the entrance to the memorial museum at the World Trade Centre site in New York, which will be inaugurated by US president Barack Obama tomorrow (+ slideshow). More about National September 11 Memorial Museum completed in New York
Korean studio Chae Pereira Architects has completed a mountainside museum dedicated to Korean artist Chang Ucchin, with a knotted plan based on the abstract paintings that typify his work (+ slideshow). More about Knot-shaped museum by Chae Pereira Architects honours Korean artist Chang Ucchin
Francis-Jones Morehen Thorp (FJMT), the architect behind the 2013 World Building of the Year, has overhauled the Tasmanian Museum and Art Gallery by transforming an old courtyard into a gallery and framing a new public square (+ slideshow). More about Francis-Jones Morehen Thorp modernises Tasmanian Museum and Art Gallery
New York architect Steven Holl has released two movies about the Sifang Art Museum in Nanjing, China, a building designed to recreate the "parallel perspectives" that are characteristic of Chinese landscape paintings. More about Sifang Art Museum "gives you a feeling of mystery" says Steven Holl
Portuguese studio CVDB Arquitectos has created a tapestry museum with vaulted ceilings, marble walls and funnel-shaped skylights inside a twelfth-century hospital building (photos by Fernando Guerra + slideshow). More about Tapestry Museum by CVDB Arquitectos features marble walls and vaulted ceilings
News: Swiss firm Harry Gugger Studio and Boston office over,under have teamed up to design Central America's largest museum of Mayan history and culture for a site in Guatemala City. More about Central America's largest museum of Mayan culture to be built in Guatemala
News: architect Julien de Smedt has designed a museum to feature at the centre of a plot line in popular Danish television series The Legacy. More about JDS Architects designs fictional museum for Danish television drama
This small wooden pavilion was modelled on the design of a rural shed and added to an old museum in Germany by architects Von M (+ slideshow). More about Small museum pavilion designed to resemble a rural shed by Von M
Danish architects COBE and Transform have completed an aluminium-clad museum of maritime history in Norway with a zigzagging profile modelled on the shapes of local wooden buildings (+ slideshow). More about COBE and Transform complete the zigzagging Porsgrunn Maritime Museum
Dezeen and MINI World Tour: Jacques Herzog of Herzog & de Meuron explains how the Pérez Art Museum Miami was designed so that everything is visible and there is no strict barrier between inside and outside, in our second movie from Miami. More about Jacques Herzog: The Pérez Art Museum "is a naked structure"
Design Miami 2013: architect Norman Foster plans to add a row of stone pavilions to the Norton Museum of Art in Florida as part of a major overhaul that will double the building's gallery space, and he unveiled the designs yesterday during the opening of the Art Basel Miami Beach and Design Miami fairs. More about Foster unveils extension plans for Florida's Norton Museum of Art
Design Miami 2013: here's a preview of the nearly completed Pérez Art Museum Miami by Swiss architects Herzog & de Meuron, which opens tomorrow to coincide with the Design Miami and Art Basel Miami Beach collectors' fairs, and which suggests a new "kind of vernacular" for the city according to Jacques Herzog (+ slideshow + photography is by Iwan Baan). More about Herzog & de Meuron's Pérez Art Museum creates new "vernacular" for Miami
The new Museum Luthers Sterbehaus by Stuttgart architects Von M is a grey-brick extension to the house where Martin Luther died - but it turns out the Christian reformer "actually died in another building around the corner" (+ slideshow + photos by Zooey Braun). More about Martin Luther "death house" museum by Von M built at wrong address