‘The avant-garde understands itself as invading unknown territory, exposing itself to the dangers of sudden, shocking encounters, conquering an as yet unoccupied future ... The avant-garde must find a...

‘The avant-garde understands itself as invading unknown territory, exposing itself to the dangers of sudden, shocking encounters, conquering an as yet unoccupied future ... The avant-garde must find a direction in a landscape into which no one seems to have yet ventured.’

JURGEN HABERMAS, "Modernity versus Postmodernity," Modernity: Critical Concepts

Using the quote by Habermas as a starting point, select up to two buildings designed in the twentieth century and examine what ‘sudden, shocking encounters’ they have encountered, or created. Analyse the building’s meanings as a demonstration of an avant-garde, or potentially arriere-garde, position.