Dear Sven,
Lewerentz talked about ancient Persian masonry walls when
asked for the design process of his famous Church of St. Mark.
Indeed the archaic and closed walls of the building stand against
the light birch grove on the site and continue inside the building
with wonderful masonry vaults ceilings.
St. Mark's was completed in 1960 when Lewerentz was 75 and it
was the building that consolidated his position as the living
master amongst Swedish architects.
Best regards.
R