Complex sentence: In 2006, Corfe Castle was the National Trust's tenth most-visited historic house with 173,829 visitors according to figures released by the Association of Leading Visitor Attractions, the number of visitors in 2010 had risen to nearly 190,000.
Split into simpler sentences: In 2006, Corfe Castle was the National Trust's tenth most-visited historic house with 173,829 visitors. According to figures released by the Association of Leading Visitor Attractions, the number of visitors in 2010 had risen to nearly 190,000.