Wales' Cardigan Castle, built in the late 12th century, was the site of recent excavations by NPS Archaeology revealing a section of the structure dating to the 1170s. Archaeologists also found over 9,000 artifacts including medieval pottery and rusted arrowheads. (photos)
The excavations at the castle were part of an UK£11m renovation project to make the site more accessible to visitors. Cardigan Castle is believed to be "the first stone castle built by the Welsh princes and was the stronghold of Rhys ap Gruffydd, prince of the medieval kingdom of Deheubarth."