Architects including Steven Holl and Bjarke Ingels have created Lego buildings for an installation by artist Olafur Eliasson on the High Line in Manhattan (+ slideshow). More about OMA, Renzo Piano, BIG and Steven Holl build Lego structures for Olafur Eliasson installation
Israeli artist Daniel Rozin has designed an interactive "mirror" from faux-fur bunches that change colour to create moving silhouettes (+ movie). More about PomPom Mirror creates "reflections" with tufts of fur
London Festival of Architecture 2015: visitors to this London "sleeperie" can take a 10-minute nap in a colourful sling within a dimly-lit room, where soothing music is played and all technology is banned (+ slideshow). More about Hassell and Draisci Studio create "London's first sleeperie" to encourage daytime naps
Belgian artists Studio Job have created a room "filled with frivolous expression" for the newly expanded Swarovski Kristallwelten attraction in Austria (+ movie). More about Studio Job installs giant crystal-encrusted model at Swarovski theme park
London Design Festival 2015: Mexican architect Frida Escobedo has added a series of adaptable mirrored platforms to the V&A museum's central courtyard, referencing an ancient Aztec city built over a lake (+ slideshow). More about Frida Escobedo creates an Aztec-inspired installation in the V&A courtyard
The sounds of 150 mechanical seesaws striking the floor of a former church in Austria reverberate around its nave in this installation by Swiss artist Zimoun (+ movie). More about Zimoun installs motorised wooden seesaws inside Austrian church
Milan 2015: Tokyo-based Schemata Architects created an exhibition stand for Swiss furniture brand Vitra made from Japanese wooden pallets for Milan's 2015 Salone del Mobile design fair (+ slideshow). More about Schemata Architects builds Vitra's Salone stand from wooden pallets
New York 2015: Print All Over Me has launched a range of textiles for the home with a living room installation in New York that changed daily to feature different patterns on every surface (+ slideshow). More about Print All Over Me debuts homeware line with patterned installation
London Festival of Architecture 2015: Turner-nominated architecture studio Assemble has revealed plans to fill a gallery in the headquarters of the Royal Institute of British Architects with a spongy Brutalist-inspired landscape. More about Assemble to fill RIBA gallery with Brutalist Playground
Clerkenwell Design Week 2015: Swiss design studio GRUPPE has installed totems of colourful building blocks on the streets of Clerkenwell during the London district's annual design festival (+ slideshow). More about GRUPPE creates pastel-coloured totems to signpost Clerkenwell Design Week
Sculptural park benches and a maze constructed of mirrors are among the pieces created by Danish artist Jeppe Hein for an outdoor exhibition in New York (+ slideshow). More about Jeppe Hein creates 18 whimsical installations for Brooklyn Bridge Park
Clerkenwell Design Week 2015: Murano glass sweets provided the inspiration for this pavilion by London studio Cousins & Cousins, which features a mixture of coloured and patterned glazing (+ slideshow). More about Glaze pavilion by Cousins & Cousins designed to resemble a Venetian glass sweet
Milan 2015: in this movie, USM CEO Alexander Schärer introduces the student installations at a Milan exhibition marking the 50th anniversary of the Swiss brand's Haller modular furniture system. More about USM's Rethink the Modular exhibition aims to "give a new perspective on modularity"
Portuguese studio LIKEarchitects has created a steel structure for Porto from a series of stairs and balconies, in celebration of the two architectural elements the designers consider crucial to the city's vernacular (+ slideshow). More about Tripod installation by LIKEarchitects is all stairs and balconies
Clerkenwell Design Week 2015: British designer Sebastian Cox has collaborated with sculptor Laura Ellen Bacon to create The Invisible Store of Happiness – a large wooden installation comprising a skeletal frame and intricate ribbon-like swathes. More about Cox and Bacon build wooden structure with a lower carbon footprint than an iPhone 6
British artist Steve Messam has installed a weight-bearing bridge across a stream in the UK's Lake District using 20,000 sheets of bright red paper (+ slideshow). More about Steve Messam creates crimson bridge from 20,000 sheets of paper
Porto studio Moradavaga has built a tower covered in tin cans that can be rotated to create pixellated messages, resembling those on train station departure boards (+ slideshow). More about Moradavaga uses spinning tin cans to turn a tower into an interactive billboard
British architect David Adjaye has filled the largest exhibition space at the Venice Biennale with a temporary museum and has also created a live events space for a seven-month reading of Karl Marx's Das Kapital (+ slideshow). More about David Adjaye creates temporary museum for Venice Art Biennale 2015
Japanese architect Shigeru Ban has designed a temporary addition to a 17th-century Venetian palazzo, featuring a curved structure covered with 90,000 empty containers usually used to hold eyeshadow. More about Shigeru Ban's Venice biennale installation is made from thousands of makeup cases
Israeli artist Tsibi Geva has wrapped his country's Venice pavilion in old car tyres and filled it with a mixture of found architectural and household objects to explore ideas about the home (+ slideshow). More about Tsibi Geva hides Israel's Venice biennale pavilion behind a wall of used tyres