Complex sentence: The present arrangement, constructed between 1656 and 1667, is the Baroque inspiration of Bernini who inherited a location already occupied by an Egyptian obelisk of the 13th century BC, which was centrally placed, (with some contrivance) to Maderno's façade.
Split into simpler sentences: The present arrangement, constructed between 1656 and 1667, is the Baroque inspiration of Bernini. It was centrally placed, (with some contrivance) to Maderno's façade.