Spiralling stone walls will be carved with images of extinct species - with space reserved for future extinctions - at this observatory and education centre designed by Adjaye Associates for the Isle of Portland, England. More about Mass Extinction Memorial Observatory by Adjaye Associates
This time-lapse movie by photographer Paul Raftery and filmmaker Dan Lowe documents the construction of "the Cheesegrater", a 225-metre skyscraper by Rogers Stirk Harbour + Partners that topped out today in the City of London. More about Movie: The Leadenhall Building by Rogers Stirk Harbour + Partners
This elliptical chapel near Oxford by London studio Niall McLaughlin Architects contains a group of arching timber columns behind its textured stone facade (+ slideshow). More about Bishop Edward King Chapel by Niall McLaughlin Architects
The London store of Swedish denim brand Nudie Jeans has been fitted out as a repair station to mend old jeans (+ slideshow). More about Nudie Jeans London by Maria Erixon Levin
An inflatable pavilion covered with a clear tensile membrane has been installed in east London by Paris architects Atelier Zündel Cristea (+ slideshow). More about Peace Pavilion by Atelier Zündel Cristea
This house in western England by London studio Paul Archer Design features a mirrored facade that slides across to cover the windows (+ slideshow). More about Green Orchard by Paul Archer Design
A tiny mobile performance venue based on sixteenth century market stalls and Roman fortune tellers will be appearing around the Lower Marsh area of Waterloo in London this summer. More about Roaming Market by Aberrant Architecture
A museum housing sixteenth century Tudor warship the Mary Rose opens today in an elliptical timber-clad building designed by London office Wilkinson Eyre Architects (+ slideshow). More about Mary Rose Museum by Wilkinson Eyre and Pringle Brandon Perkins+Will
An elongated timber prow oversails a solid brick base at this school boathouse in Worcester, England, by British studio Associated Architects (+ slideshow). More about Michael Baker Boathouse by Associated Architects
News: architecture firm dRMM will install 20 interlocking wooden staircases outside St Paul's Cathedral for the London Design Festival in September. Update: the Endless Stair will now be constructed outside Tate Modern. More about dRMM to install Escher-style staircase outside St Paul's Cathedral
This house in rural England was designed by British architect Lucy Marston to reference old English farmhouses and features red brickwork, a steep gabled profile and a corner chimney (+ slideshow). More about Long Farm by Lucy Marston
British design studio JamesPlumb has created a dimly lit showroom filled with antique furniture in the basement of east London menswear store Hostem (+ slideshow). More about The Chalk Room by JamesPlumb
Here are the latest images of Rogers Stirk Harbour + Partners' extension to the British Museum in London, set to complete early next year. More about World Conservation and Exhibitions Centre by Rogers Stirk Harbour + Partners
London practice Allford Hall Monaghan Morris used pale brick walls, gabled roof profiles and domestic furniture to make this London hospice look like an oversized house (+ slideshow). More about North London Hospice by Allford Hall Monaghan Morris
This cabin covered in hand-painted patterns by Hackney architects Studio Weave provides a colourful art studio, bird-watching hide and rain shelter in a woodland park in Kent, England (+ slideshow). More about Ecology of Colour by Studio Weave
Architecture office AR Design Studio has converted an old stable block in Hampshire, England, into a three-bedroom family house (+ slideshow). More about Manor House Stables by AR Design Studio
Architecture firm Haworth Tompkins has installed a bright red auditorium amongst the brutalist concrete of London's National Theatre (+ slideshow). More about The Shed at the National Theatre by Haworth Tompkins
Architects Lily Jencks and Nathanael Dorent have teamed up and fitted out a tile showroom in London to look like a psychedelic cartoon (+ slideshow). More about Pulsate by Lily Jencks and Nathanael Dorent
London studio Mikhail Riches has renovated a nineteenth-century house in London and added a glazed kitchen and dining room at the rear (+ slideshow). More about East London House by Mikhail Riches
Dutch firm UNStudio has unveiled images of its first UK project: a 30-storey residential tower on London's City Road. More about Canaletto by UNStudio