Caerphilly is a huge castle, well preserved with fascinating water defences. It is a medieval castle that dominates the centre of the town of Caerphilly in south Wales. It is the largest castle in Wales and the second largest in Britain after Windsor Castle.
Built mainly between 1268 and 1271, it is an early example of a concentric castle with extensive water defences.
The castle is now a tourist attraction and includes a small shop in between its two main bridges. It is also licensed to perform wedding ceremonies - the Great Hall providing facilities for 100 guests. Fishing is available in the north and south lakes for carp and other coarse fish.