Close to the cathedral are the 12th century circular baptistery, that has considerably later additions, and the famous Leaning Tower, the three buildings forming one of the finest architectural groups in the world.
"Architecture"
Nancy R E Meugens Bell
Recesses round the walls of the mausoleum-church contained sarcophagi: in the centre of the baptistery was the great font.
"The Ground Plan of the English Parish Church"
A. Hamilton Thompson
Probably it was a combination of baptistery with tomb-church.
"The Ground Plan of the English Parish Church"
A. Hamilton Thompson