Architect Kengo Kuma has designed an expansion scheme for the Portland Japanese Garden that preserves existing gardens while adding new buildings to the verdant site (+ slideshow). More about Kengo Kuma expansion plan unveiled for Japanese garden in Oregon
This wooden pathway installed over the Fonte Luminosa fountain in Lisbon enables visitors to get close enough to the cascading water to be soaked by its spray (+ movie). More about Marcelo Dantas installs temporary walkway over Lisbon's Fonte Luminosa fountain
Dutch multidisciplinary studio RAAAF has unveiled plans to expose the subterranean landscape beneath a demolished sugar factory in Groningen, creating a new public space amidst a forest of columns. More about Subterranean public space to be created beneath demolished Groningen sugar silo
Rotterdam studio ZUS has completed what they describe as the "world’s first crowdfunded public infrastructure project" - a 400-metre-long pedestrian bridge in their home city (+ slideshow). More about Crowdfunded Luchtsingel pedestrian bridge opens in Rotterdam
The city council of St Petersburg, Florida, has signed off the demolition of a historic pier and approved plans for its replacement – a hybrid pier and park designed by New York studio Rogers Partners. More about Rogers Partners team moves ahead with new Pier Park in Florida's St Petersburg
Creators of the proposed Lowline in New York, billed as the world's first underground park, have launched a Kickstarter campaign to help fund development of the project (+ slideshow). More about Lowline creators launch Kickstarter campaign for underground park in New York
A huge lightbox is wedged underneath a wave-shaped viewing platform at the end of this pier, designed by Dutch architect René van Zuuk for a lake in the city of Almere (+ slideshow). More about René van Zuuk creates a wavy pier with an integrated lightbox over an Almere lake
Sections of Renaissance paintings are mounted onto angular planters across the colourful temporary landscape installed at a Bergamo gallery by Studio Fink (+ slideshow). More about Studio Fink covers Italian art museum courtyard with brightly coloured astroturf
Architecture and landscape firm Snøhetta has been appointed to develop plans for a new public access route along Willamette Falls in Oregon, the second largest waterfall in the US (+ slideshow). More about Snøhetta team to design river walk next to America's second largest waterfall
Interview: a Kickstarter campaign has launched to fund a floating swimming pool for London's River Thames. According to Studio Octopi architect and project co-founder Chris Romer-Lee, the city is experiencing an outdoor swimming revolution. More about "People have had it with the smells and verrucas from indoor pools" says Thames Baths founder
A naturally filtered outdoor swimming pool is taking shape as part of the redevelopment of King's Cross in London. More about Freshwater bathing pond to open in London's King's Cross
Egypt is to unveil plans for a vast new privately funded administrative capital for seven million residents that would extend Cairo eastwards to the coast of the Red Sea. More about Egypt plans new capital city covering 700 square kilometres
Bored with the dismal view from the office window, Polish studio Zalewski Architecture envisioned a grassy suspended walkway that would allow them to take a stroll without leaving the building. More about Zalewski Architecture imagines spiral walkway strung between high-rise buildings
News: architecture firm Gensler wants to repurpose London's abandoned tube tunnels to create a subterranean network of pathways that generate electricity as people walk and cycle through them. More about London's derelict tube tunnels reimagined as a pedestrian and cycle network
News: Steven Holl has been appointed to rework the campus of Houston's Museum of Fine Arts and will add new buildings to offer a "complementary contrast" to structures by Mies van der Rohe and Rafael Moneo. More about Houston's Museum of Fine Arts unveils campus redesign by Steven Holl
New York City's skyscraper clusters and strict street grid are illustrated in these images taken from a helicopter by French-American photographer Vincent Laforet (+ slideshow). More about Vincent Laforet documents New York with aerial photographs
News: a team led by 64North Architecture has won a competition to design a pedestrian and cyclist bridge connecting the San Francisco Bay waterfront and Palo Alto – home to some of the world's leading technology companies. More about Palo Alto footbridge will span the 14 lanes of San Francisco's 101 freeway
Spindly orange walkways are raised above the waters and meadows of this wetland park designed by landscape architects Turenscape on a neglected river in China (+ slideshow). More about Turenscape transforms "lifeless ditch" into wetland park with meandering causeways
Divooe Zein Architects has installed an arced structure covered in nets to shelter a woodland glade near the Taiwanese capital, Taipei (+ slideshow). More about Woodland greenhouse by Divooe Zein Architects provides shelter for flora and fauna
This wooden observation platform by architects Javier Mera, Jorge Andrade and Daniel Moreno sits high above a three-kilometre-wide lake inside an active volcano in the Ecuadorian Andes (+ slideshow). More about High-altitude viewpoint perches over a volcanic crater lake