A spectacular staircase can transform even the most average building, and this year we've seen them in a huge variety of materials and sizes. Dezeen editor Anna Winston chooses 10 of the best from 2015. More about Dezeen's top 10 staircases of 2015
London designer Rachel Harding has created a range of framed fluorescent lamps that cast multicoloured diffracted light (+ slideshow). More about Rachel Harding's Wonderfluoro lights create rainbow-coloured visual effects
A zigzagging concrete screen separates this refurbished toll house in the Dutch city of Zaltbommel with a living room extension designed by architecture studio Bekkering Adams (+ slideshow). More about Bekkering Adams adds concrete extension to a traditional Dutch toll house
Movie: in our next exclusive movie for Moroso, Italian designer Martino Gamper explains how he designed his St Mark stacking chair to unify the appearance of indoor and outdoor cafe seating. More about Martino Gamper's St Mark chair for Moroso is designed to be made from different materials
From knitted meat served up in a virtual restaurant to a chocolate flat-pack Christmas tree, we've updated our food-themed Pinterest board to include the best new edible design projects.
Follow Dezeen on Pinterest | See the latest food-related design in our archives
More about Feast your eyes on Dezeen's updated food Pinterest board
Merry Christmas and happy holidays to all our readers! Browse the latest festive designs and keep up to date with the latest architecture and design news over the holidays by following us on Instagram »
This idyllic winter scene was created by rendering studio Forbes Massie, and is among our favourite Christmas cards of 2015.
More about Merry Christmas from Dezeen
This house near the French town of Caen spirals around an internal courtyard to provide privacy for the owners in an area surrounded by new homes (+ slideshow). More about Maison Spirale wraps around a central courtyard to offer residents privacy and light
Ukrainian designer Max Voytenko has created a collection of shelving and coffee tables with supports designed to resemble a drawing of a folded sheet of paper. More about Max Voytenko's Kroll shelves and tables have matching zigzag elements
Pininfarina and AECOM have beaten proposals from Zaha Hadid and Moshe Safdie in a contest seeking a design for an air-traffic control tower at Istanbul's new airport. More about Pininfarina and AECOM win competition for air-traffic control tower at Istanbul New Airport
This week's Dezeen Mail features a selection of designer Christmas cards, 10 of the best houses published on Dezeen in 2015 and Zaha Hadid's controversial reaction to Kengo Kuma's plan for the Tokyo 2020 Olympic stadium.
Read Dezeen Mail issue 285 | Subscribe to Dezeen Mail
More about Dezeen Mail issue 285 features a selection of this week's best stories and discussions
Belgian architect Vincent Callebaut has developed plans for a city of futuristic ocean buildings made from 3D-printed plastic waste which extend 1,000 metres below the water's surface (+ slideshow). More about Vincent Callebaut proposes underwater "oceanscrapers" made from 3D-printed rubbish
The final addition to our alphabetical countdown of contemporary bridges is Zaha Hadid's Zaragoza Bridge Pavilion, which formed the gateway to the World Expo in 2008. More about Dezeen's A-Zdvent calendar: Zaragoza Bridge Pavilion by Zaha Hadid
London studio Archmongers has remodelled and extended a 1960s terrace house in the city, refreshing the facade with glazed tiles similar to those found on London's tube stations (+ slideshow). More about Archmongers revamps 1960s London terrace using glazed tiles and an elaborate staircase
Extra Moooi: in this movie filmed in Amsterdam, Moooi co-founder Marcel Wanders discusses the woven carbon-fibre chair he designed with Bertjan Pot, which the Dutch brand relaunched this year as a bar stool. More about Moooi’s bar stool version of iconic Carbon Chair is "super light and super strong"
Our second featured bridge of the day is the Yangtze River Bridge in Wushan, China, which is one of the longest tied-arch bridges in the world. More about Yangtze River Bridge in Wushan, China
Taiwanese designer Yen-Wen Tseng has used simple geometric shapes to create stationery that looks like a set of miniature concrete sculptures. More about Merge by Yen-Wen Tseng is a sculptural concrete stationery set
It's Christmas eve, which means today we're featuring three projects in our bridge-themed A-Zdvent calendar! First up is the Xiying Rainbow Bridge in Taiwan – a simple bridge by day that transforms into a rainbow by night. More about Dezeen's A-Zdvent calendar: Xiying Rainbow Bridge
Here is a selection of some of the best Christmas cards we've received from architects, designers and brands this year, including a winter scene by MVRDV that shows Father Christmas lounging on top of the studio's sofa-like clubhouse in Amsterdam. More about Designer Christmas cards 2015
Built near the heart of Melbourne's historic brick-making district, this block of apartments and shops has walls of black bricks that are arranged to create perforated patterns and provide privacy for residents (+ slideshow). More about Ola Architecture Studio's housing block in Melbourne designed as an "ode to brick"
Wülser Bechtel Architekten has completed a male hair groomers in Zurich featuring a pair of sculptural mirrors and a floor that reveals traces of the building's history (+ slideshow). More about Sculptural mirrors frame spaces in Zurich barbershop by Wülser Bechtel Architekten