What does caerphilly have in common with the tower of Pisa?

Caerphilly, a town in Wales, is known for its impressive castle, Caerphilly Castle, which is one of the largest in the UK. Similarly, the Leaning Tower of Pisa in Italy is renowned for its unique architectural tilt. Both structures are significant landmarks in their respective countries and attract numerous tourists due to their historical significance and distinctive features. Additionally, both sites reflect the engineering challenges and artistic ambitions of their time.