the open archway in the center". Pope Urban desired the towers to be completed by a very specific date: 29 June 1641, the feast day dedicated to Saints Peter and Paul. To this end an order was issued which stated that "all work should take a second seat to that of the campanile". The south tower was completed on time even in spite of these issues, but records show that in the wake of the unveiling the Pope was not content with what he saw and he ordered the top level of Bernini's tower removed so that the structure could be made even grander. The tower continued to grow, and as the construction began to settle, the first cracks started to appear followed by Urban's infamous public admonishment of his architect. In 1642 all work on both towers came to a halt. Bernini had to pay the cost for the demolition; eventually the idea of completing the bell towers was abandoned. Narthex and portals Behind the façade of St. Peter's stretches a long portico or "narthex" such as was occasionally found in Italian churches. This is the part of Maderno's design with which he was most satisfied. Its long barrel vault is decorated with ornate stucco and gilt, and successfully illuminated by small windows between pendentives, while the ornate marble floor is beamed with light reflected in from the piazza. At each end of the narthex is a theatrical space framed by ionic columns and within each is set a statue, an equestrian statue of Charlemagne (18th century) by Cornacchini in the south end and The Vision of Constantine (1670) by Bernini in the north end. Five portals, of which three are framed by huge salvaged antique columns, lead into the basilica. The central portal has a bronze door created by Antonio Averulino c. 1440 for the old basilica and somewhat enlarged to fit the new space. Maderno's nave To the single bay of Michelangelo's Greek Cross, Maderno added a further three bays. He made the dimensions slightly different from Michelangelo's bay, thus defining where the two architectural works meet. Maderno also tilted the axis of the nave slightly. This was not by accident, as suggested by his critics. An ancient Egyptian obelisk had been erected in the square outside, but had not been quite aligned with Michelangelo's building, so Maderno compensated, in order that it should, at least, align