This man evoked the encircling arms of Mother Church with his use of a branching Tuscan colonnade to delineate a keyhole-shaped piazza consisting of a trapezoid joined to an oval; that piazza is centered on Rome's longest standing obelisk.
In front of one church designed by this man, semicircular steps are enclosed by two arm-like concave walls topped by scallop designs. Above those steps designed by this man is the carved crest of the Pamphili family. This man designed honeycomb coffering that shrinks as it nears the cupola to create an illusion of extra height in the elliptical church of Sant'Andrea al Quirinale. This man lost to [*] Claude Perrault in Louis XIV's contest to design the east faÃ§ade of the Louvre. This man evoked the encircling arms of Mother Church with his use of a branching Tuscan colonnade to delineate a keyhole-shaped piazza consisting of a trapezoid joined to an oval; that piazza is centered on Rome's longest standing obelisk. For 10 points, identify this Baroque architect of St. Peter's Square.
In front of one church designed by this man, semicircular steps are enclosed by two arm-like concave walls topped by scallop designs.
Gianlorenzo Bernini