Complex sentence: The town was founded around an 8th century abbey, one of the largest in Europe, which was destroyed during the Dissolution of the Monasteries, with only Abbot Lichfield's Bell Tower remaining.
Split into simpler sentences: The town was founded around an early 8th century abbey, which was once one of the largest in Europe. The abbey was destroyed during the Dissolution of the Monasteries, with only Abbot Lichfield's Bell Tower remaining.