The top of this faceted private observatory in central New Hampshire, by Anmahian Winton Architects, rotates to provide different views of the night sky. More about Anmahian Winton's zinc-clad observatory enables stargazing from a New Hampshire mountain
Architecture studio Cooke Fawcett has built an elevated walkway atop a multi-storey car park in south London, a space that is also used as an open-air gallery by arts organisation Bold Tendencies. More about Cooke Fawcett's rooftop observatory gives views of London's skyline from above a Peckham car park
Four cylindrical towers are elevated on stilts to create this retreat in Cape Town, which was designed by local studio Malan Vorster to offer views among the trees. More about Malan Vorster's treehouse-like residence offers views of Cape Town forest
This house by Mexican architect Tatiana Bilbao comprises a cluster of five-sided concrete blocks that emerge from a forested hillside to offer panoramic views towards the city of Monterrey. More about Tatiana Bilbao's Ventura House "grows organically" out from a forested Mexico hillside
French studio Martin Duplantier Architectes has proposed a series of bridges and viewpoints for Zhangjiajie National Forest Park – the site of the world's longest and highest glass bridge. More about Mirrored and transparent viewpoints proposed for China's Zhangjiajie forest
Projecting over a hillside in the Ecuadorean countryside, this small mirrored viewpoint was designed by Natura Futura Arquitectura as a rest stop for hikers (+slideshow). More about Mirrored viewing platform by Natura Futura is disguised against the Ecuadorean landscape
British designer Thomas Heatherwick has revealed a honeycomb-like structure comprising a series of interconnected staircases to sit at the centre of the vast Hudson Yards development on Manhattan's West Side. More about Heatherwick unveils staircase structure as "centrepiece" for New York's Hudson Yards
A technical fault trapped 180 passengers inside the doughnut-shaped viewing pod of the i360 observation tower last night, leaving them suspended above Brighton's seafront for two hours. More about "Slight technical hitch" traps 180 passengers inside world's tallest moving observation tower
Swedish architect Anders Berensson has unveiled conceptual plans to convert a pair of disused electricity pylons into observation towers in Stockholm's Norra Djurgården national park. More about Stockholm pylons converted into "picnic towers" in plans by architect Anders Berensson
This triangular viewing platform perched on the edge of a mountain was created by Norwegian studio Code Arkitektur as a rest stop for one of the country's picturesque tourist trails (+ slideshow). More about Mountainside platform by Code Arkitektur creates three vertiginous viewpoints
To gain views of Lake Erie from a sheltered plot, architecture firm Kariouk Associates designed this Canadian house to include a "love nest" that pokes above the treetops (+ slideshow). More about Kariouk Associates sneaks around planning laws to gain lake vistas for A Bower House
With the Marks Barfield-designed i360 in Brighton set to open to the public this week, drones have shot new footage of the structure billed the "world's tallest moving observation tower" (+ movie). More about "World's tallest moving observation tower" filmed by drones ahead of opening this week
Daredevils can enjoy sweeping views of Los Angeles while descending a transparent slide almost 1,000 feet above the city (+ movie). More about Glass Skyslide opens at the top of LA's tallest skyscraper
A giant slide by Belgian artist Carsten Höller that spirals through the frame of the Anish Kapoor-designed ArcelorMittal Orbit opens to the public tomorrow. More about Slide woven through Anish Kapoor's ArcelorMittal Orbit to open in east London
A giant glass-and-steel doughnut that will transport passengers up and down a 162-metre-high pole is undergoing final tests ahead of its opening according to Marks Barfield Architects, who designed the British Airways i360 viewing tower. More about "World's tallest moving observation tower" prepares to welcome first passengers
Plant Architect has used weathering steel to create a series of wing-like structures for bird watchers in a Toronto park, which are punctured with both patterns and information about local species (+ slideshow). More about Bird-watching pavilions by Plant Architect are made from perforated plates of weathering steel
Cumulus Studio has used shipping containers to create a lookout tower and wine-tasting space at a vineyard in Tasmania (+ slideshow). More about Cumulus Studio uses shipping containers to create lookout tower at a Tasmanian vineyard
Architect Philipp Bretschneider has perched a garden viewpoint on a picturesque Mallorcan hillside, using the steel structure to frame views across the Mediterranean Sea (+ slideshow). More about Philipp Bretschneider's simple garden pavilion frames views over the Mediterranean
Marks Barfield Architects and Davis Brody Bond have teamed up to design an aerial "gondola" that would stretch over the city of Chicago and serve as a major tourist attraction. More about Aerial cable car proposed for Chicago by Marks Barfield and Davis Brody Bond
This weathering steel staircase by engineering studio Close to Bone cantilevers off a hill in Flanders, forming an observation tower overlooking rolling farmland and the Kabouterbos forest (+ slideshow). More about Gravity-defying staircase by Close to Bone climbs up into the sky