Alaska-based artist Nicholas Galanin has created a metal sculpture resembling a stretched animal hide in front of the St Louis Gateway Arch to challenge "narratives of westward expansion" for art festival Counterpublic. More about Nicholas Galanin "interrupts sightline" of Gateway Arch with animal-hide sculpture
Local studio Design Alliance Architects included stained-glass windows in a sculptural concrete chapel with eight massive curving walls in St. Louis, Missouri. More about Design Alliance Architects raises curved concrete chapel in Missouri
Architecture studio Snøhetta has completed a sculptural addition to the home of St Louis Symphony Orchestra in St Louis, USA, while revamping historical interiors and creating a public-facing plaza. More about Snøhetta completes arched extension to St Louis' Powell Hall
US architecture studio Ayers Saint Gross has created a light-filled visitor center to serve as a gateway for the Missouri Botanical Garden in St Louis. More about Ayers Saint Gross embeds plant motifs in Missouri Botanical Garden visitor centre
Global design studio HOK and Minnesota-based Snow Kreilich Architects have teamed up to create the Citypark urban sports campus and stadium for a Major League Soccer club in St Louis, Missouri. More about HOK and Snow Kreilich raise thin canopy above St Louis soccer stadium
New York-based artist Torkwase Dyson has designed a monolithic black structure for the Counterpublic art festival in St Louis to augment sound recordings from a ragtime composer. More about Torkwase Dyson fuses sound and architecture for St Louis installation
Architecture studio Snøhetta has unveiled its design for an expansion to St Louis Orchestra's Powell Hall that will feature scalloped walls, a grainy brick facade and glazed arches. More about Snøhetta to add entrance shaped like "canted shells" to St Louis' Powell Hall
Architecture firm Studio Gang has completed a tiered residential skyscraper with angled glass elements that overlooks Forest Park in St Louis, Missouri. More about Studio Gang designs One Hundred skyscraper with angled facades in St Louis
A subterranean museum below architect Eero Saarinen's iconic arch in St Louis has been renovated and expanded by three architecture firms, as part of an effort to rejuvenate the area around the monument. More about Eero Saarinen's Gateway Arch museum undergoes revitalisation in St Louis
Artist William LaChance has created a giant mural across a series of basketball courts in a St Louis suburb. More about William LaChance spruces up St Louis basketball courts with "tapestry of colour"
Chicago architecture firm Studio Gang has released a teaser image of a high-rise for St Louis, Missouri, made up of four-storey tiers with faceted slanted sides. More about Studio Gang reveals tiered residential tower for St Louis
British architect David Chipperfield has completed a new gallery building at the Saint Louis Art Museum in Missouri (+ slideshow). More about Saint Louis Art Museum East Building by David Chipperfield