Now, standing in the middle of this square we have a splendid view of the largest and most important church in the Christian world. The Church was started in the early of the 16th century and took over a hundred years to complete. Bramante, Raffaello, and Michelangelo all worked on it. The centerpiece of the church is the magnificent dome standing over 120 meters high. We shall now go into the church and climb to the top for some wonderful views of the city – so I hope you are feeling fit!