Spanish practice Smart & Green Design has re-designed the Barbican's touring Game On exhibition for a former underground cistern in Madrid, using more than 150 LED arches to evoke the neon colours of the 1980s. More
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
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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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
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
The underground Museum of the Great Famine by Nizio Design International in Kyiv, Ukraine, will be topped by two misaligned green roofs. More
A network of subterranean concrete galleries forms the UCCA Dune Art Museum, which Beijing-based Open Architecture has completed in Qinhuangdao, China. More
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
Metallic paint, perforated aluminium and black rubber are combined to give this Manhattan espresso bar by Only If Architecture a futuristic feel. More
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
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
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
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
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
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
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
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
This house in Malavli, India, features walls made from local Kotah stone and a glazed, subterranean courtyard (+ slideshow). More
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
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
