A strip of glazing interrupts the seamless stone-clad surfaces of this multipurpose cultural venue, which Berlin office Hascher Jehle Architecture designed for a site in the Austrian city of Feldkirch (+ slideshow). More about Montforthaus is a curving stone and glass cultural centre in a medieval Austrian city
Designer Daan Roosegaarde has installed the "largest smog vacuum cleaner in the world" in Rotterdam to help improve the city's air quality (+ movie). More about Daan Roosegaarde's Smog Free Tower opens in Rotterdam
On the edge of Mexico's border with the US, this house by New York-based architects T38 Studio hides an enclosed courtyard garden behind its black stucco volumes (+ slideshow). More about House in Mexico by T38 Studio contains a private courtyard garden
Chocolate-patterned wall panelling and sofas shaped like Toblerones feature in Dutch designer Marcel Wanders' Swiss-inspired hotel in Zurich (+ slideshow). More about Swiss chocolate influences Marcel Wanders' Kameha Grand Zurich hotel
This multifunctional building by French studio PPA Architectures, provides a residence, gallery, workshop and events space, and stands at the edge of a golf course on the outskirts of Toulouse, southern France (+ slideshow). More about PPA Architectures completes gallery space and residence overlooking a Toulouse golf course
Zaha Hadid is working with Japanese architecture and engineering firm Nikken Sekkei to win back the Tokyo Olympic stadium project after its first competition-winning design was thrown out in July (+ slideshow). More about Zaha Hadid teams up with Nikken Sekkei to submit new bid for Tokyo 2020 stadium
This moulded concrete cinema by Irish studio dePaor Architects is built on the site of a Georgian merchant's house in Galway, west Ireland (+ slideshow). More about Cast-concrete Galway Picture Palace by dePaor Architects stands behind a Georgian terrace
A pair of steel-clad volumes with pitched roofs and glazed gables provide additional living space behind the ornamental facade of this Victorian terrace in Melbourne (+ slideshow). More about Nic Owen Architects updates ornate Melbourne terrace with ribbed steel extension
Maison&Objet 2015: this cast-iron candle holder by Norwegian designer Lars Beller Fjetland automatically puts out the flame just before the wick burns out (+ movie). More about Lars Beller Fjetland designs self-extinguishing Moment candlestick for Wrong for Hay
The wooden frame of this two-storey family home in Japan's Shiga Prefecture is disguised by a layer of ridged steel panels (+ slideshow). More about Junichi Kato clads House in Shigaraki in dark brown-coated steel