London architecture studio Orproject has installed a forest of illuminated paper trees that join up to form a continuous canopy at a gallery in New Delhi (+ slideshow). More about Glowing indoor forest made from paper by Orproject
These interactive installations by artist Daniel Rozin use sensors and motors to rearrange objects into a mirror-image of whoever stands in front of them (+ slideshow). More about Mechanical Mirrors by Daniel Rozin replicate images using everyday objects
An Alpine choir pivoted on hydraulic platforms as part of French fashion house Moncler's Autumn Winter 2014 presentation at New York Fashion Week, which concludes today (+ movie). More about Hydraulic mechanisms tilt singers at Moncler Autumn Winter 2014 presentation
The surrounding trees and sky will be reflected in a wide, shallow pool of water in this installation by Spanish architecture group Citylaboratory for a garden festival in Quebec, Canada. More about Reflective dish of water to be installed at International Garden Festival in Quebec
Canadian firm RAW Design has created a series of shelters that look like giant pompoms to keep skaters warm on a frozen river in Winnipeg (+ slideshow). More about Shelters resembling giant pompoms by RAW Design warm skaters on a frozen river
Visitors could suspend themselves within a 3D grid of ropes inside this inflatable installation created by Croatian-Austrian design collective Numen/For Use (+ slideshow). More about Numen/For Use creates 3D grid of ropes inside inflatable String Prototype installation
Stockholm 2014: as Guest of Honour at Stockholm Furniture Fair, design duo GamFratesi has installed petal-shaped mobiles above the lounge area at this year's exhibition. More about Petal-shaped mobiles balance above GamFratesi's lounge at Stockholm Furniture Fair
This hilltop staircase by Dutch firm NEXT Architects appears to create a continuous pathway, but it's actually impossible to walk round more than once without climbing off (+ slideshow). More about Hilltop staircase by NEXT Architects creates the illusion of an endless walkway
A twisting chain-link and barbed-wire fence installed by French artist and architect Didier Faustino at an exhibition in Cincinnati determines the path taken by visitors through the gallery space. More about Twisting barbed wire fence installed by Didier Faustino at Cincinnati's Contemporary Arts Center
Dezeen and MINI World Tour: Dutch designer Daan Roosegaarde explains how his installation in Eindhoven consisting of hundreds of glowing LED crystals will change over time as some people steal them and others create new ones of their own. More about Daan Roosegaarde: "People can do what they want with my Crystal installation"
The window of London department store Selfridges has been dressed with a selection of new inventions by British designer Dominic Wilcox, including a reverse listening device and binoculars for viewing the future (+ slideshow). More about Dominic Wilcox's absurd inventions displayed in Selfridges' window
Interdisciplinary art collective BeAnotherLab has developed a virtual reality headset that allows users to experience what it would be like to live in the skin of someone from the opposite sex. More about Virtual reality headset by BeAnotherLab lets users try swapping gender
Architects including Álvaro Siza, Eduardo Souto de Moura and Kengo Kuma have taken over the galleries of London's Royal Academy of Arts for an architecture exhibition that features a labyrinth of sticks, an inhabitable timber monument and a web of scented bamboo (+ slideshow). More about Sensing Spaces exhibition opens at the Royal Academy
Cologne 2014: two shingle-clad houses converge to form this year's Das Haus home of the future installation at the imm cologne fair by Copenhagen designer Louise Campbell (+ slideshow). More about Das Haus conceptual future home installed at imm cologne by Louise Campbell
Visitors to London department store Selfridges can take a virtual reality tour created by technology company Inition inside a helmet by fashion designer Gareth Pugh (+ slideshow). More about "Immersive virtual world" by Gareth Pugh and Inition installed at Selfridges
Over 170,000 visitors to this year's Sochi Winter Olympics will be able to have their faces scanned and recreated on the facade of a building as part of an installation by London designer Asif Khan. More about Asif Khan designs a "Mount Rushmore of the digital age" for the Sochi Winter Olympics
Japanese artist Kohei Nawa filled a dark room with billowing clouds of foam for this art exhibition in Aichi, Japan (+ slideshow). More about Kohei Nawa's Foam installation created a cloud-like landscape of soapy bubbles
The 365 wooden sledges used to construct this Christmas tree in Budapest by Hungarian designers Hello Wood will be given to a local children's charity following the festive period (+ movie). More about Christmas tree made from sledges
People could immerse themselves in a huge fabric cocoon at this interactive installation by architect and artist Sophia Chang (+ slideshow). More about Sophia Chang installs stretchy fabric tunnels through a gallery
Dezeen Music Project: London artist Di Mainstone is developing an electronic instrument that enables performers to make music from the subtle vibrations of suspension bridge cables (+ movie). More about Di Mainstone's Human Harp creates music from suspension bridges