Architects and designers have imagined ways to transform the central reservation along New York's Park Avenue for an ideas competition, including an underground rock-climbing wall, a huge cascading waterfall and a route for kayaking commuters. More about Waterfalls, forests and kayaks among proposals for Park Avenue centreline
Renzo Piano Building Workshop has revealed its first project in Canada: a Toronto courthouse elevated on columns to expose tall glazed walls and a 20-metre-high atrium. More about Renzo Piano unveils new courthouse for Toronto
Our series covering modernist architecture in Palm Springs continues with the city's municipal building, designed by Swiss architect Albert Frey to include large canopies over its entrances – one with palm trees growing through its centre. More about Canopies and porticos shade outdoor spaces at Albert Frey's Palm Springs City Hall
Design studio Snøhetta has expanded a Michelin-star restaurant in California's Napa Valley with a glazed annex, and renovated its kitchen and grassy courtyard. More about Snøhetta revamps The French Laundry restaurant with fritted glass extension
Scooped white columns resembling upturned arches provide a decorative facade for the Coachella Valley Savings & Loan bank designed by E Stewart Williams, which is next up in our series spotlighting Palm Springs' mid-century architecture during the city's Modernism Week. More about Tapered colonnade fronts Coachella Valley Savings and Loan bank by E Stewart Williams
Dutch firm OMA has revealed its design for a six-sided courthouse in Lille, France, which will feature sheer facades of coloured glass. More about OMA unveils plans for coloured glass courthouse in Lille
This vibrant bank by architect Rudy Baumfield, based on Le Corbusier's famed Ronchamp chapel, is next in our series profiling Palm Springs' many impressive mid-century buildings during the city's Modernism Week. More about Modernist Bank of America in Palm Springs is modelled on a Le Corbusier chapel
Palm Springs Modernism Week kicks off today, and we're taking a closer look at some of the city's best mid-century buildings to coincide with the event. First up is the Tramway Gas Station, designed by architects Albert Frey and Robson Chambers to mark the entrance into the modernist mecca. More about Tramway Gas Station by Frey and Chambers is a modernist gatehouse for Palm Springs
Brightly coloured hand and foot holds form climbing routes across turquoise walls at this bouldering centre, set inside an industrial building in Minneapolis. More about Faceted structures and colourful holds form climbing walls in Minneapolis bouldering gym
Canadian firm MJMA has completed a swimming centre for the University of British Columbia, which is surrounded by fritted glass and topped with a dramatic white roof. More about Angular white roof covers MJMA's glazed aquatic centre in Vancouver
Jamie Fobert Architects has completed an extension to Kettle's Yard gallery in Cambridge, England, adding a series of new exhibition and education spaces that complement the intimate and relaxed rooms of the original converted house. More about Jamie Fobert's Kettle's Yard extension echoes "calm aesthetic" of existing gallery
New Orleans firm Trahan Architects has completed a visitor centre for an 18th-century plantation in Louisiana, using translucent glazing to blur views of occupants from the outside "like an impressionist painting". More about Staggered glass walls front visitor centre at Louisiana plantation house
A multi-coloured house is turned upside down and used as a climbing frame in this competition-winning design by architecture office Alma-nac. More about Alma-nac to build tiny upside-down house in UK play park
A crane overlooking Amsterdam's IJ river has been transformed into a luxury rental apartment, featuring three stacked shipping containers accommodating living spaces designed by Edward van Vliet to reference the area's industrial past. More about Edward van Vliet converts crane into three-storey holiday retreat in Amsterdam
Grimshaw Architects has released the first visual of the Eden Project in Qingdao, which will contain the world's largest indoor waterfall. More about Grimshaw Architects reveals first image of Chinese Eden Project
A dilapidated treehouse in Aspen has been rebuilt using vertical wooden slats and translucent panels by local firm Charles Cunniffe Architects, with plenty of help from the community. More about Charles Cunniffe spruces up treehouse in Aspen with local assistance
Giant triangular panels overlap to surround this American football stadium in Atlanta by architecture firm HOK, which has a roof that "opens and closes like a camera aperture". More about Atlanta stadium by HOK hosts American football games under retractable "petals"
Retail company Amazon has completed a set of glass orbs filled with "cloud forest" gardens for its headquarters in Seattle, providing work areas for employees and green space for the public. More about Plant-filled spheres open at Amazon headquarters in Seattle
A 130-metre-tall spherical concert hall that could rise taller than St Paul's Cathedral, is being planned near the Olympic park in Stratford, east London. More about Giant globe-shaped concert hall planned for east London
American studio Schaum/Shieh has used steel, concrete and wood to create a live music venue in Houston, Texas, that can handle large crowds and rowdy performances. More about Schaum/Shieh designs Houston concert venue to endure "rough handling"