Curved and angular bay windows animate the stepped facade of House on a Hill, a penthouse in central London designed by local studio David Kohn Architects. More about David Kohn Architects designs London penthouse to resemble "house on a hill"
Munich-based architecture firm Holzrausch has completed a two-storey extension to a penthouse in Frankfurt, featuring open-plan living spaces that connect with a roof terrace overlooking the city. More about Holzrausch designs Frankfurt penthouse as a "roof garden in the middle of the city"
Dutch design studio Barde vanVoltt has used textured stucco walls, stainless steel panels and sculptural stone elements to outfit a two-level penthouse in Mexico City. More about Barde vanVoltt designs Mexico City penthouse as "brutalist sanctuary"
An all-black kitchen stands out against the otherwise white and concrete interior of this minimalist Toronto penthouse, designed by Canadian studio GH3*. More about "Restrained, rigorous" palette enhances Toronto penthouse by GH3*
A better sense of flow has been created between the rooms of this London penthouse, which design firm Uncanny Studio has decked out with marble, walnut wood and other luxury materials. More about Uncanny Studio revamps and reconnects rooms within 1930s London penthouse
Colombian studio 5 Sólidos has outfitted a duplex apartment in Medellín with a curvaceous red velvet couch and a concrete stair surrounded by vintage glass brick as an homage to 1980s style. More about 5 Sólidos "channels the 1980s" with glass brick and velvet for Medellín apartment
A disagreement over colours led local design firm Wendover to split the bathroom of this "elegant and playful" London apartment into contrasting pink and green marble zones. More about Coloured marble defines his-and-hers sinks in Marylebone penthouse
Toronto studio Reflect Architecture has worked with music producer Noah Shebib to overhaul his penthouse apartment in the city, adding a granite plinth around its perimeter and a custom Sabine Marcelis table. More about Reflect Architecture renovates Toronto penthouse for a music producer
Local architecture studio Carmody Groarke has overhauled a penthouse apartment in London, adding slanted panels of aluminium to create a sheltered rooftop terrace. More about Carmody Groarke tops listed London penthouse with aluminium "rooftop pavilion"
Spanish architecture firm Destudio has renovated a penthouse in Valencia with a large outdoor terrace that overlooks the city's bustling Turia gardens. More about Destudio revamps Valencian penthouse to flaunt "breathtaking" city views
Architecture studio Foster + Partners has designed a pair of 180-metre-tall residential skyscrapers named Regent Residences Dubai, which will be bridged together by a swimming pool at the penthouse level. More about Foster + Partners unveils Dubai skyscrapers linked by penthouse swimming pool
French designer Philippe Starck has used Brazilian materials for the interiors of the penthouse at the Rosewood São Paulo, inside a tower by architect Jean Nouvel. More about Philippe Starck reinterprets Brazilian modernism in São Paulo penthouse
House-shaped blocks will protrude from the facades of this mixed-use high-rise in Tirana, Albania, which has been designed by architecture studios Network of Architecture and Atelier4. More about NOA and Atelier4 stack house-shaped "puzzle pieces" for Tirana high-rise
Architect Crina Arghirescu Rogard has updated a penthouse apartment in a historic New York City building, injecting an array of designs into an already eclectic collection. More about Crina Arghirescu Rogard adds "eccentric design" to historic penthouse in Tribeca
A penthouse has been unveiled inside British architecture firm RSHP's first residential project in New York City: a tower overlooking City Hall Park in Lower Manhattan. More about Penthouse at Richard Rogers-designed New York tower overlooks City Hall Park
Architecture studio Office Alex Nicholls has fused two penthouse apartments in Melbourne into one large flexible home, converting their basement parking spots into a private spa and pool. More about Office Alex Nicholls creates multi-generational Melbourne apartment with its own spa
A large variety of art and collectible design pieces populate this penthouse apartment in São Paulo, designed by local studio Tria Arquitetura, which also includes a sculptural staircase. More about Tria Arquitetura renovates São Paulo penthouse with sculptural staircase
Design studio Coordination has combined two attic apartments into a single penthouse in Berlin, crafting its interiors around the owner's art collection. More about Coordination merges Berlin attic apartments to create artsy penthouse
Architecture office Bureau Fraai used freestanding wooden volumes to organise the interior of this penthouse in the Netherlands, preserving panoramic views of the surroundings from within the living areas. More about Oak-lined boxes delineate living spaces at Bureau Fraai's Panorama Penthouse
Arched openings frame views of New York City from this triplex penthouse apartment in a Carnegie Hill residential tower, designed and developed by American real estate company Joe McMillan's DDG. More about DDG and IMG outfit penthouse in art deco-influenced Manhattan skyscraper