Guerilla lighting designers Luzinterruptus snuck out in the dead of night to stick 400 illuminated silicone nipples all over statues outside the Public Art Museum in Madrid. More about Touch! Touch! Nothing will Happen by Luzinterruptus
Vienna Design Week 2011: a rotating arm deposits spirals of quartz sand on the showroom floor at crystal company Lobmeyr in Vienna this week, thanks to Canadian designer Philippe Malouin. More about Time Elapsed by Philippe Malouin and Lobmeyr
Dezeen Platform: JAILmake Studio will pack seeds and soil into bricks using their one meter by one metre factory at Dezeen Platform at Dezeen Space today More about Today at Dezeen Platform: JAILmake
French architect Serge Salat has designed an infinite labyrinth of shapes and colours for a touring exhibition in China. More about Beyond the Infinity by Serge Salat
Dezeen Platform: visitors to Dezeen Space today can stand on Dezeen Platform installation to create a soundscape by linking hands with others. More about Today at Dezeen Platform: LingJing Yin, Mark McKeague and Ting Chung Jessica Cheng
London Design Festival 2011: here are some photos of an installation by Japanese designers Nendo at the headquarters of design brand Established & Sons during the London Design Festival this week. More about My London by Nendo for Established & Sons
This movie by the American Hardwood Export Council shows the manufacture of the Timber Wave by AL_A, a three-storey-high red oak sculpture installed outside the V&A museum for the London Design Festival. More about Manufacturing the Timber Wave by AL_A and Arup
London Design Festival 2011: British architect John Pawson has installed the largest lens ever made by crystal brand Swarovski in the southwest tower of St Paul's Cathedral for the London Design Festival, which starts on Saturday. More about Perspectives by John Pawson at St Paul's Cathedral
Students at the Architectural Association in London have constructed leaf-like sculptures that curl down from a fourth-floor roof terrace to a ground level courtyard. More about 3013 Installation at the Architectural Association
An army of 100 scarecrows dressed in glowing decontamination suits kept a sinister vigil over the Dockville Festival in Hamburg earlier this month. More about Radioactive Control by Luzinterruptus
What appears to be an open tunnel beneath a bridge in northern Spain is in fact a concealed passageway, screened behind a secret mirror. More about Mirror lab by VAV Architects
Ron Arad's cylindrical cinema screen made of 5600 silicon rods opens at the Roundhouse in London today. More about Curtain Call by Ron Arad at the Roundhouse
An undulating landscape made of 65,000 discarded CDs carpets the floor of the Centquatre art space, housed in a former funeral home in Paris. More about WasteLandscape by Elise Morin and Clémence Eliard
Billowing fabric mushrooms by New York designers Situ Studio have cropped up in the great hall of the Brooklyn Museum. More about ReOrder at the Brooklyn Museum by Situ Studio
Polish artist Monika Grzymala will fill a London gallery with lengths of black and white sticky tape at an exhibition that opens in October. More about Miles and Miles of Sticky Tape by Monika Grzymala
Visitors can clamber inside a stretchy web of netting installed by Numen/For Use at Belgian gallery Z33 this summer. More about NET by Numen/For Use
This 28 metre-high steel sculpture of the Jaguar E-Type car was designed by Gerry Judah for the Goodwood Festival of Speed, which took place in Sussex, UK, last weekend. More about Jaguar E-Type Sculpture by Gerry Judah
Hats by Japanese milliner Akio Hirata appear to float between the floor and ceiling in this installation by Japanese designers Nendo. More about Akio Hirata’s Exhibition of Hats by Nendo
German studio D'art have covered a wall in white paper boxes and spotty black lettering for the German Pulp and Paper Association at a Düsseldorf trade fair. More about Paperboard Architecture by D’art for VDP
Milan 2011: visitors to an installation by London designer Paul Cocksedge at the Milan showroom of lighting brand Flos could view an animation of a BMW 6 Series car only by putting their heads inside a plastic lamp shade. More about Sestosenso by Paul Cocksedge for BMW and FLOS