The Biggest Castle in Wales – Caerphilly Castle

A medieval fortification built by Gilbert de Clare in the 13th century in the town of Caerphilly in South Wales. Loads of moats and lakes, it is said to have the most elaborate water defences in Britain. Occupying around 30 acres (12 hectares) it is the second-largest castle in the United Kingdom. One of its defining features is its leaning tower. The south-east tower in the Inner Ward leans outwards at an angle of 10 degrees.