The Chapter House at Westminster Abbey is a significant part of the complex. It is a circular building located to the east of the Abbey and was built in the 13th century. The Chapter House served as a meeting place for the monks of the abbey to discuss business and administration matters. It is known for its intricate architecture, particularly the beautiful fan vaulting ceiling, which is a remarkable example of English Gothic architecture. The Chapter House also houses an impressive collection of medieval art, manuscripts, and historic documents. It is a fascinating space to explore for its historical significance and architectural beauty.