A Swiss firm in Prague has completed the 'Keystone Building' recently that gives a nod to old Czech cubism from the early 20th century.

EM2N, a Swiss firm, produces powerful architecture that some may hate or love. Its latest project is the firm's most distinct piece of work to date. The faceted facade of the building was inspired by Czech Cubism and not only does it create an eye-catching exterior, the building also helps reduce carbon emissions. The firms claims that “The double-layered façade not only produces a sculptural outer skin, but also improves the performance of the windows in terms of thermal and acoustic insulation.”

Upon looking at the Keystone Building, you can see a resemblance to polygonal structures, but when you enter the interior of the building you will be greeted by reflective, polished walls that encapsulate the stairwells, creating am image-bending effect to get lost in.