Jeffrey L. Thomas has created this online trove of visual and written material dedicated to providing visitors to his site with information about the castles of Wales. Himself a devotee of Welsh culture, Mr. Thomas offers a site that features background reading on castle construction, the Welsh language, medieval Welsh history, and a glossary of terms related to castles. From the main menu, users can browse a list of Welsh castles or select any of the Welsh castles from an interactive map of Wales divided into six sections. Every castle entry on the site has a historical sketch of the castle's history, often with a description of current archaeological work in progress around the site. Rounding off the site are a series of essays on different topics, including "The Castles of Wales in Art." Persons traveling to Wales or those with even a passing interest in the histories of these structures will find a great deal to enjoy here.