Visitors can now scale British designer Thomas Heatherwick's giant honeycomb-like sculpture at New York's Hudson Yards, which has opened along with the other public spaces at the vast West Side development. More
Snøhetta has released visuals of a Museum Quarter in the mountains of Bolzano, which will have a projecting stepped roof that doubles as a viewpoint. More
Orma Architettura has built three matching wooden viewpoints in the mountains of the Mediterranean island Corsica, for people to observe the native red deer. More
The 305-metre-tall viewing attraction The Tulip, proposed for the UK capital by Foster + Partners, does not comply with London Plan says city mayor Sadiq Khan. More
The Walk Above the Vineyards is a circular ramp designed by architecture studio Keeo4design, which offers an elevated view over the vineyards in the Czech Republic's South Moravian Region. More
Six trapezoidal shapes cluster to form a courtyard within this pavilion, which architecture studio Levenbetts has built on the grounds of an arts centre in Upstate New York. More
MAD has revealed visuals of a "theatrical" spiral staircase set to create a panoramic viewing platform for a historic warehouse on Rotterdam's waterfront. More
A salt marsh and a cantilevered viewing platform are among the features in an extensive new park that stretches along the East River in Long Island City, Queens. More
The Tulip – a 305.3-metre tall tower topped with a viewpoint and rotating gondolas designed by Foster + Partners – is planned to be built alongside the Gherkin in London. More
Texas firm Lemmo Architecture and Design has clad this hunting lookout and writer's studio in weathering steel, to disguise the structure against the arid landscape. More
The Space Needle observation tower in Seattle has reopened to the public following an extensive overhaul by American firm Olson Kundig Architects, which involved adding "the world's first and only revolving glass floor". More
Fuses Viader Arquitectes has transformed a 19th-century fortress near the Spanish city of Girona into a museum and hotel complex featuring concrete, glass and weathered-steel. More
London-based architects Denizen Works has submitted planning for a observation tower containing a vertical gallery and bird hide at Inverewe Garden in Scotland. More
Engineering studio Close to Bone has announced plans to rebuild and enlarge the cantilevered viewing platform it built in Flanders, Belgium, which was severely damaged in an apparent explosion. More
Arc Designs has created a cantilevered viewing platform, and walkway with a glazed floor, perched on one of the highest points of the Rock of Gibraltar. More
A helium balloon tethered to a cantilevered track is among the winners in a competition to design a conceptual observation deck to overlook a volcano's crater in eastern Turkey. More
Dutch firm MVRDV has won a contest to create a wave-like viewpoint on the coast of Holland, which is designed to rock like a seesaw with the changing of the tides. More
This compact timber-and-concrete cabin in the Norwegian village of Nerskogen incorporates large windows that angle upwards to make the most of views towards the nearby lake and mountain range. More
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
This wooden tower by Norwegian architect Lars J Berge provides an accessible hide for birdwatchers on an island north of Bergen. More