Fort Lauderdale has voted to approve a proposal from Elon Musk's tunnelling firm Boring Company to build an underground transit loop connecting the downtown part of the Florida city to its beachfront. More
San Antonio architecture firm Clayton Korte has nestled a wine cellar into the rolling hills of Texas, tucked away in a limestone cave so it disappears into the surrounding landscape. More
Greek studio Mold Architects has completed a house on the island of Serifos that is partially submerged into a rocky hillside and features glazed openings that look straight out to sea. More
Architect Gerhard Heusch has completed a subterranean extension for his own 15-year-old home that sits atop pilotis over a hillside in California. More
Chinese architecture studio MAD has revealed its design for Train Station in the Forest in Jiaxing, China, which will see the studio rebuild a historical railway station and complement it with a new underground terminal. More
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
