Complex sentence: The façade consists of a central body flanked by two smaller side ones, the center topped by a large dome reminiscent of that of St. Paul's in London or that of St. Peter's Basilica in the Vatican, with two smaller domes on each side.
Split into simpler sentences: The façade consists of a central body flanked by two smaller side ones. The center topped by a large dome reminiscent of that of St. Paul's in London or that of St. Peter's Basilica in the Vatican, with two smaller domes on each side.