Penrhyn is an interesting location in Gwynedd in North Wales, 2 miles outside Bangor.
Penrhyn Castle is now in the care of the National Trust.
Built in the 19th century in a neo-Norman style, it features elaborate, enormous and frankly vulgar opulence, and is hugely fascinating.
The Pennant family owned slate quarries in Snowdonia, and had an industrial railway to carry the slate to Port Penrhyn. They also owned a Caribbean sugar plantation and were involved in the slave trade.
During the Second World War, some of the masterpieces from the National Gallery were transferred to the castle for safe keeping.