Caerphilly Castle, Wales, built from 1268 CE and famous for its artificial water defences.
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This image was first published on Flickr.
Original image by Nathan Reading. Uploaded by Mark Cartwright, published on 15 May 2018 under the following license: Creative Commons: Attribution-NonCommercial-NoDerivs. This licence only allows others to download this content and share it with others as long as the author is credited, but they can't change the content in any way or use it commercially. Please note that content linked from this page may have different licensing terms.