Read the text. Fill in the gap with the missing part of the sentence.
Cardiff is an excellent place to start or finish a trip along The Cambrian Way. In the city center, Cardiff Castle offers a window on 2,000 years of history, _______________ as shelters during air raids during World War II.

• from Roman-built foundations to tunnels that served
• seeing the animals, farm task demonstrations, and crafts
• with something to please every type of traveller
• right through the heart of Wales
• originally built in 1853
• to the capital city of Cardiff on the southern coast
• which are visited every year