Triangle School by Nameless Architecture has a three-sided courtyard at its centre.
Slovenia Pavilion at Expo Milano 2015, Milan, 2015 - SoNo arhitekti
Probably not your style but it's so cool I had to share :-)
A Bali Wedding Chapel - Bali Arch.
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Homes Out Of The Ordinary
(Louis) Kahn's stairwell in the Gallery is a triangle in a cylinder. The Yale Center for British Art, Kahn's final building, has a cylindrical stairwell with a square inside.
Art and Photography
Trump Tower Fifth Avenue, NYC Why do nice buildings belong to such psychpaths
DaeWha Kang Design have completed the transformation of a dull 1980’s era office building in Seoul, South Korea, into a contemporary building covered in creative touches.
Blue Triangle by Herzog & de Meuron - Building: Edificio Forum, Forum Building, Edificio Fórum, Edifici Fòrum, Barcelona. Completion: 2004. Owner: City of Barcelona. Architects: Herzog & de Meuron.
Herzog & de Meuron
Textural patterns in architecture with geometric shapes, contrast & repetition; b&w inspirations