Official Rio 2016 Olympics posters unveiled
Rio 2016: 13 artists have designed posters for this year's summer Olympics, which start in Rio later this week. More
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Giles Miller's Penny-Half Sphere sculpture is a "double-sided portal" hanging above a stream
Hundreds of reflective "pennies" form this spherical sculpture, created by Giles Miller's London design studio for Devon's Broomhill Sculpture Park (+ movie). More
Katharina Grosse gives colourful makeover to decaying building at Rockaway Beach
A condemned structure on a New York beach has been transformed into an artwork using brightly coloured spray paint by German artist Katharina Grosse (+ slideshow). More
Tippet Rise Art Center opens on a cattle ranch in rural Montana
Massive earthen sculptures and a wooden concert hall form part of the new Tippet Rise Art Center, a vast performance venue and park in a remote area of Montana (+ slideshow). More
Christo accused of wasting public money on Floating Piers installation
An Italian consumer group has accused Bulgarian artist Christo of wasting taxpayers' money, because of the costs of managing his floating installation on Italy's Lake Iseo. More
Christo's Floating Piers stretch out across an Italian lake
Three kilometres of saffron-coloured pathways temporarily connect the shore of Italy's Lake Iseo to islands at its centre in this installation by Bulgarian artist Christo (+ slideshow). More
Olafur Eliasson installs giant waterfall at Palace of Versailles
A towering waterfall appears to fall from midair into the Grand Canal at the Palace of Versailles as part of Danish-Icelandic artist Olafur Eliasson's latest exhibition (+ slideshow). More
Yayoi Kusama exhibition in London includes three new mirror rooms
Japanese artist Yayoi Kusama is exhibiting a year's worth of new sculptures, paintings and installations at London's Victoria Miro galleries, including three mirrored rooms and plenty of pumpkins. More
Zaha Hadid retrospective announced for Venice Architecture Biennale
Venice Architecture Biennale 2016: a retrospective of work by the late Zaha Hadid will take place during this year's Venice Biennale, including early paintings, models and photos of past and future projects. More
Daniel Buren colours the sails of Frank Gehry's Fondation Louis Vuitton
French artist Daniel Buren has covered the glass sails of Frank Gehry's Fondation Louis Vuitton building in Paris with an array of multicoloured filters (+ slideshow). More
Anish Kapoor receives exclusive rights to blackest black in the world
Indian-born British artist Anish Kapoor has acquired exclusive rights to the revolutionary Vantablack pigment, said to be the blackest shade of black ever created. More
Daniel Arsham evokes knocked-through walls with SCAD installation
Snarkitecture co-founder Daniel Arsham has opened a solo show at the Savannah College of Art and Design (SCAD) Museum of Art in Georgia, which features eroded, rippled and cloth-like wall installations. More
Tomás Saraceno installs Aerocene metallic orbs in Paris' Grand Palais
Argentinian artist Tomás Saraceno has created a pair of air-filled globes that he eventually plans to sail across the sky. More
Ai Weiwei appeals to public after Lego refuses to provide bricks for "political" work
Danish toy brand Lego, which has built a fan base among architects and designers with its colourful building bricks, has been accused of "censorship" by Chinese artist Ai Weiwei after refusing to supply an order for an exhibition in Australia. More
Bugs adorn the walls at renovated Renwick Gallery in Washington DC
American artist Jennifer Angus has used an intricate pattern of insects to decorate a vivid pink room at the Renwick Gallery in Washington DC, set to reopen next month following renovation work (+ slideshow). More
Twisted art museum by BIG to be built across a Norwegian river
Bjarke Ingels' firm has unveiled its plans to build an art gallery that twists across a river in a Norwegian sculpture park (+ slideshow). More
Alex Chinneck unveils installation modelled on upside-down electricity pylon
London Design Festival 2015: British artist Alex Chinneck has revealed a 35-metre-tall latticed steel sculpture resembling an upside-down electricity pylon for this year's London Design Festival (+ slideshow). More
Italo Rota designs Arts and Food exhibition for Triennale di Milano
Milan 2015: a major show examining the relationship between art and rituals around food opened this week at the Triennale di Milano museum with an exhibition design by Italian architect Italo Rota (+ slideshow). More
Galleries around the world are finally "starting to take digital art seriously"
Movie: in this film produced by Dezeen for the British Council, leading artists and curators discuss the increasing significance of digital art and the new opportunities open to artists working "in a digital age." More
Bertrand Lavier's "unruly mass" of hoses creates a fountain outside the Serpentine Sackler Gallery
Lengths of brightly coloured garden hose are arranged to resemble a classical fountain in a work by artist Bertrand Lavier currently installed in the grounds of London's Serpentine Sackler Gallery (+ slideshow). More