Glass corridor connects underground concrete extension to house in Spain
Architecture studio Jordi Hidalgo Tané has extended a small stone building in rural Navarra, Spain, with a subterranean concrete annex accessed via a glass corridor. More
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Herzog & de Meuron designs motorway chapel in Switzerland
Angled white walls will mark the entrance to underground contemplation spaces at Herzog & de Meuron's roadside Autobahnkirche chapel in Switzerland.
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Amezcua transforms cave into subterranean addition for Mexico City dwelling
Rugged walls, domed ceilings and reflective surfaces feature in this underground lair that was designed by Mexican studio Amezcua for an existing 1960s residence on a hill. More
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MDDM to revive Oscar Niemeyer's abandoned fairground in Tripoli
MDDM has revealed visuals of a subterranean business park that is set to reinvigorate Oscar Niemeyer's unfinished Rashid Karame International Fair expo site in Lebanon. More
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Nizio Design International reveals Museum of the Great Famine designs
The underground Museum of the Great Famine by Nizio Design International in Kyiv, Ukraine, will be topped by two misaligned green roofs. More
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Open Architecture builds cave-like art gallery inside a sand dune
A network of subterranean concrete galleries forms the UCCA Dune Art Museum, which Beijing-based Open Architecture has completed in Qinhuangdao, China. More
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Amos Rex's bulging underground galleries create playful landscape in Helsinki plaza
JKMM Architects designed a series of domed subterranean galleries for the soon-to-open Amos Rex museum in Helsinki, which bubble up through the ground to create a playful outdoor landscape. More
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Only If creates space-themed underground coffee bar in New York
Metallic paint, perforated aluminium and black rubber are combined to give this Manhattan espresso bar by Only If Architecture a futuristic feel. More
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Underground Roman temple reopens as immersive museum using light, haze and sound
A subterranean Roman temple where a mysterious cult worshipped has been restored within an immersive museum below Bloomberg's headquarters in London by 9/11 memorial museum exhibition designers Local Projects. More
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Elon Musk's Boring Company plans to beat traffic with underground "car skates"
Elon Musk has revealed a plan for easing city congestion that would see an underground network of tunnels transporting cars on high-speed skates travelling at 130 miles per hour. More
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Jamie Fobert's cliffside extension to Tate St Ives nears completion
Work is almost complete on a sunken extension to the Tate's seaside art gallery in St Ives, Cornwall, which is set to open to the public later this year. More
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Studio MRDO and Studio LaM envision underground bathhouse between North and South Korea
New York practices Studio MRDO and Studio LaM have have won an ideas competition with their proposal for a theatrical underground pool set in the Demilitarised Zone between North Korea and South Korea. More
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Illiz Architektur sets children's swimming pool above former underground troop billet in Zurich
Illiz Architektur mounted this indoor swimming pool on top of a disused concrete shelter for rescue forces to offer bathers views of Switzerland's Lake Zurich. More
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Govaert & Vanhoutte Architects creates bachelor pad with underground club on Ghent's Leie river
An underground lair modelled on an exclusive nightclub lies below this riverside bachelor pad near Ghent, where the owner has built-in cigar and wine storage, a car lift and a view into the depths of the pool. More
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Rasem Kamal proposes warren of subterranean services for Jordan's Wadi Rum
Architect Rasem Kamal has proposed a network of burrow-like spaces that would sprawl out beneath a UNESCO-protected valley in the Jordanian desert. More
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Kerstin Thompson adds intimate underground tasting room to Australian winery
A doorway discreetly set into a circular stone wall leads into this moody subterranean wine cellar that architect Kerstin Thompson has created at Australia's TarraWarra vineyard. More
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House with stone walls built by Spasm Design around a sunken courtyard in India
This house in Malavli, India, features walls made from local Kotah stone and a glazed, subterranean courtyard (+ slideshow). More
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Dune-shaped car park by Royal HaskoningDHV doubles as a flood defence
Curving windows peep above the ground to bring light into this underground car park in South Holland, which is covered in grassy hillocks to replicate a dune landscape (+ slideshow). More
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Ciaran Scannell proposes "fantastical world" in London's HS2 railway tunnels
Graduate shows 2016: the UK's high-speed railway network could incorporate an underground swimming pool, museum and concert hall, suggests Royal College of Art graduate Ciaran Scannell. More
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OPA finds backer for cliffside residence sunken into Lebanese mountain
Open Platform for Architecture is moving forward with plans to build a subterranean residence that will slice into a mountain near Beirut and feature a glass swimming pool for a roof (+ slideshow). More
