I might have known better； but，somehow，I had expected to see it，casting its long shadow on a public street where people came and went all day. It was a surprise to me to find it in a grave retired place，apart from the general resort，and carpeted with smooth green turf. But，the group of buildings，clustered on and about this verdant carpet： comprising the Tower，the Baptistery，the Cathedral，and the Church of the Campo Santo： is perhaps the most remarkable and beautiful in the whole world； and from being clustered there，together，away from the ordinary transactions and details of the town，they have a singularly venerable and impressive character. It is the architectural essence of a rich old city，with all its common life and common habitations pressed out，and filtered away.