From the end of the eighteenth century, many people became interested in medieval architecture. Some wealthy people remodelled their houses to look like castles, or even built new ones. These castles showed that the owners were rich and wealthy, but were not built to defend them or their land.
Castell Coch is near Cardiff and is cared for by Cadw. It was built between 1860 and 1880 for the marquess of Bute, who made a fortune from Cardiff docks. He owned the ruins of a medieval castle and employed the architect William Burges to rebuild it. William Burges was an expert on medieval design and as well as the castle itself, he designed the furniture and decoration down to the last detail.
Penrhyn Castle, near Bangor, Gwynedd, belongs to the National Trust and is open to the public. It was built about 1820 for the Pennant family who made a fortune from supplying slate for roofing houses.