Cardiff Castle.

“It all started in the 1st century AD by the Romans who built the first in a series of forts. In the 11th century, the Normans constructed the Keep that still dominates the Castle Green to this day. The medieval Lords of Glamorgan began work on the House during the 15th century.

“The Bute family left their mark on the entire city in the 19th century, they also transformed the House into the opulent Victorian Gothic home it is today. During World War II the walls which surround the Castle were used as air raid shelters; a place of safety for thousands of Cardiff citizens. A reconstruction of the shelters has been opened for visitors to explore.”