Hammerbeam roof

decorative, open timber roof truss typical of English Gothic architecture

Hammerbeam roof is a type of wooden roof. It was used in the gothic architecture.

Westminster Hall in the early 19th century
The restored new hammerbeam roof in the Great Hall at Stirling Castle.
Hammerbeam ceiling, carved in oak by Patrick Keely at St. Mary - St. Catherine of Siena Parish (Charlestown, MA).