Yes, the gorgeous country of Wales is said to be the capital of castles. It has about 400 castles, of which over 100 are still standing in impressive fashion.
When you grow up in a place like Texas with a Welsh girl's name, you suddenly find yourself in search of others that can pronounce it. When I was working in Ireland, I realized it was time for the pilgrimage.
I hopped a commercial ferry to land in Wales and spent a week hiking in the Snowdonia National Park. The walks are epic, the people wonderful and the castles, a cool bonus.
Caernarfon Castle is a medieval building in Gwynedd, north-west Wales and well worth the visit when you're in the area.