This concrete staircase into the air by Lisbon architecture studio Ateliermob functions as a riverside amphitheatre on the banks of the Tagus in central Portugal (+ slideshow). More about Rio de Moinhos Open-Air Theatre by Ateliermob
Prayer rooms with walls of red concrete lead out to a staggered sequence of graveyards at this Islamic cemetery in western Austria by local studio Bernardo Bader Architects (+ slideshow). More about Islamic Cemetery by Bernardo Bader Architects
Four courtyards penetrate the rectilinear volume of this concrete library in Spain by architects Ramon Esteve Estudio (+ slideshow). More about Biblioteca Sant Josep by Ramon Esteve Estudio
Barcelona studio Hidalgo Hartmann Arquitectura has completed a concrete house with a triangular profile in the rural outskirts of Girona, Spain (+ slideshow). More about Casa Montfullà by Hidalgo Hartmann Arquitectura
This family house in Athens by Greek office Tense Architecture Network comprises a boxy concrete upper floor perched atop a glazed living room and kitchen (+ photographs by Filippo Poli). More about Residence in Kato Kifissia by Tense Architecture Network
Diagonally stepped floors and ceilings divide triangular zones inside this pair of studio apartments in Tokyo by Kiyonobu Nakagame Architect & Associates (+ slideshow). More about Motoazabu Apartment sYms by Kiyonobu Nakagame Architect & Associates
Chilean architect Pedro Gubbins designed this concrete residence as a rural retreat for himself and his family and has balanced it on top of a dry-stone wall (+ slideshow). More about Omnibus House by Gubbins Arquitectos
Japanese architect Jo Nagasaka has stripped an office in south-west Tokyo back to the concrete to create a fashion boutique that looks more like an abandoned warehouse for Japanese brand EEL (+ slideshow). More about EEL Nakameguro by Schemata Architecture Office
This half-scale model of a spiral staircase by American studio Matter Design is made from concrete treads that slip neatly over each other. More about Helix Staircase by Matter Design
A secluded courtyard is concealed behind the stark concrete facade of this house in Nuevo León, Mexico, by Monterrey studio Stación-ARquitectura (+ slideshow). More about Casa 2G by Stación-ARquitectura
Rooms and surfaces are generated from a complex web of hexagons at this contemporary arts centre in Córdoba, Spain, by Madrid office Nieto Sobejano Arquitectos (photography is by Roland Halbe). More about Contemporary Art Centre Córdoba by Nieto Sobejano Arquitectos
Canadian architect Henri Cleinge built a house for himself in Montreal with concrete walls inside and out. More about La Maison Beaumont by Henri Cleinge Architecte
A rescued stone colonnade stands amongst planes of concrete at this religious shrine in the Spanish countryside by Pamplona studio Otxotorena Arquitectos (+ slideshow). More about Shrine of the Virgin of La Antigua by Otxotorena Arquitectos
This house for a surgeon in Chiba, Japan, by Apollo Architects & Associates contains courtyards with elevated wooden walkways and glass walls behind its thick concrete exterior (+ slideshow). More about Still by Apollo Architects & Associates
Australian firm Charles Wright Architects used a mixture of precast and in-situ concrete to construct a house that can withstand the most powerful cyclones in northern Queensland (+ slideshow). More about Stamp House by Charles Wright Architects
This concrete photography studio in São Paulo by Studio MK27 features two folding walls that allow the garden to be included in shoots (+ slideshow). More about Studio R by Studio MK27
Japanese studio FORM/Kouichi Kimura Architects references ecclesiastical architecture with this cafe in Hyogo, Japan, which has a concrete steeple (+ slideshow). More about Cafe Cross by FORM/ Kouichi Kimura Architects
Bold primary colours punctuate this stark concrete extension to a secondary school outside Lisbon by Portugese architect CVDB Arquitectos (+ slideshow) More about Braamcamp Freire Secondary School by CVDB Arquitectos
Chinese studio Archi-Union has converted an office block in Shanghai into an art gallery with a concrete staircase twisting through its middle (+ slideshow). More about Jade Museum by Archi-Union
An entrance concealed behind a ceramic mural leads down into a sunken living room and courtyard at this house in São Paulo by Brazilian architects Terra e Tuma. More about Maracanã House by Terra e Tuma