Precast concrete stairs from Hollow Core Concrete.

In June OSW visited the Biennale of Sydney. We love concrete – and there were some great examples of brutal form work on cokatoo island – one of the Biennale sites.

Images from the State Library Image Database.

Concrete Projection Screen on top of Unité d’Habitation.

Elevated walkway in Brazilia.

Buckminster’s geodesic dome for the American Pavilion at the Montreal World Fair, ‘67.

With a temperature differential of just 1 deg. Fahrenheit, a 2 mile diameter geodesic sphere with 5000 people inside would float.

Nine earth-houses by architect Peter Vetsch.

Arcosanti, Arizona (under construction) by architect Paolo Soleri.

An interesting concrete structure known as the ‘flytrap’ and rumoured to be a launching structure for Nazi flying saucers.

Locutorio Colón by Maki Portilla Kawamura and Tadanori Yamaguchi, February 2006. Located in Plaza de Colón in central Madrid the building acted as a free call centre to Latin America. via Proteinos

Expanded polystyrene modular public seating by ppag architects Vienna.

BasketBar by NL Architects at Utrecht University Campus. via architettura.dada.net