Sant’Andrea della Valle

…most impressive is that of Sant’Andrea al Quirinale (1658–70) in Rome, with its dramatic high altar, soaring dome, and unconventionally sited oval plan. But Bernini’s greatest architectural achievement is the colonnade enclosing the piazza before St. Peter’s Basilica. The chief function of the large space was to hold the crowd…

…produced the facade design of Sant’Andrea della Valle, and Borromini was permitted to undertake the lantern of the church’s dome himself. Borromini’s personality is apparent in these projects, though Maderno’s style dominates them. A facade to be attached to the late 16th-century oval church of Sant’Anna dei Palafrenieri was Borromini’s…