Complex sentence: Erddig is one of the country's finest stately homes-in September 2007 it was voted the UK's "favourite Historic House" and the "8th most popular historic site" in the UK by Britain's Best.
Split into simpler sentences: Erddig is one of the country's finest stately homes. In September 2007 it was voted the UK's "favourite Historic House" and the "8th most popular historic site" in the UK by Britain's Best.