A sweeping roof inspired by the mountain skyline of the Alps defines a hillside extension to the Olympic Spa Hotel by Network of Architecture. More about NOA designs Alpine hotel extension as a play on the mountain skyline
The New York office of architecture studio OMA has completed its renovation of Tiffany & Co's flagship store in Manhattan, adding a three-storey glass extension to the historic jewellery store. More about OMA tops Tiffany & Co's Fifth Avenue flagship with "jewellery box" addition
Interior design studio The Mint List has brought light, space and warmth to this Edwardian house in London with multiple extensions, a hidden playroom and plenty of tactile materials. More about The Mint List brings mid-century influences to north London family home
French studio Olivia Fauvelle Architecture has used glazed tiles and concrete lintels to transform the outbuilding and courtyard of a house in the south of France. More about Green tiles line Maison Jericho extension in Marseille
Warm, tactile materials and rich colours are balanced with a newfound sense of openness in this early 20th-century house that architecture studio Daytrip has renovated and extended in London. More about Daytrip creates calm broken-plan interior for Edwardian home in west London
Ahead of King Charles III's coronation this weekend, Dezeen has put together a roundup of bold modern extensions bolted onto the side of historic British houses. More about Ten traditional British houses with standout modern extensions
A pink rear extension informed by the work of architect Luis Barragán has been added to a 1930s home in the suburbs of Dublin by Irish architecture practice Courtney McDonnell Studio. More about Courtney McDonnell Studio adds pink extension to 1930s Dublin home
Dutch practice Kaan Architecten has extended the Museum Paleis Het Loo in Apeldoorn, the Netherlands, concealing over 5,000 square meters of visitor spaces beneath a public courtyard and fountain. More about Kaan Architecten's underground extension to Dutch museum is designed to "radiate grandeur"
A barrel-vaulted visitor centre with an earthy colour palette is set to be added to Bodegas Faustino winery in Rioja as part of a renovation by British architecture studio Foster + Partners. More about Foster + Partners to add barrel-vaulted visitor centre to Spanish winery
Spanish studio H Arquitectes has converted a small 19th-century dwelling into a spacious family home in Barcelona named House 1616. More about H Arquitectes transforms 19th-century Barcelona terrace with brick extension
Limestone and oak are among the materials used in this extension that local studio Architecture For London designed to add a contemporary twist to a Victorian house in Hackney. More about Architecture For London adds light-filled extension to Victorian Hackney home
Australian studio Matt Gibson Architecture + Design has transformed a Victorian home in Melbourne's suburbs with a faceted extension clad in black metal. More about Matt Gibson adds sculptural extension to Victorian Melbourne home
London studio Francesco Pierazzi Architects has extended a suburban house in Croydon, adding two volumes with carefully-positioned openings that follow the path of the sun. More about Francesco Pierazzi Architects adds light-filled extension to Suncatcher house
Reclaimed bricks and large windows define the side and rear extensions that London practice Rise Design Studio has added to a mid-terrace Victorian house in Queen's Park. More about Rise Design Studio adds reclaimed-brick extensions to Queen's Park House
Straw, eelgrass and wood feature in this bio-based extension that Danish architecture studio Henning Larsen has added to Feldballe School in Denmark. More about Henning Larsen uses natural materials for Danish school extension
Exposed blockwork and corrugated steel were used to bring a brutalist feel to this extension of a Victorian terrace in Camberwell, south London, designed by local practice Pashenko Works. More about Pashenko Works adds corrugated metal and blockwork extension to Camberwell home
UK studio Charles Holland Architects has created an unconventional, colourful extension to a Victorian terraced house in east London. More about Charles Holland Architects creates "playful and exuberant" terraced house extension
Australian architect Emily Sandstrom has transformed a run-down 1930s bungalow in Sydney by adding an extension that was partly built from demolition materials. More about Emily Sandstrom builds Sydney home extension from recycled materials
Czech studio Atak Architekti has added a metal-clad extension to a former rectory building to create a library and multifunctional community spaces for the city of Liberec in the Czech Republic. More about Atak Architekti creates Liberec library by restoring and extending a former rectory
A larch-clad extension by Swedish practice Johan Sundberg Arkitektur adds a modern twist to this 1920s villa in an apple orchard in Lund. More about Johan Sundberg Arkitektur adds larch-clad extension to villa in Swedish apple orchard