Simplify the following text for a Grade 10 native English-speaking person.
Original: Masterpieces of architecture and sculpture were completed at cathedrals around Europe , including the Cathedral of Chartres and Nicola Pisano 's pulpits for the Duomo di Siena and Pisa 's Baptistery .
Simplified: These include the Cathedral of Chartres and Nicola Pisano 's pulpits for the Duomo di Siena and Pisa 's Baptistery .