Which ruler built Dolbadarn Castle in the 13th century?
A. Owain Glyndŵr
B. Rhys ap Gruffydd
C. Llywelyn the Great
Fact: Llywelyn the Great, Prince of Gwynedd, commissioned Dolbadarn Castle in the 13th century to secure the strategic Llanberis Pass.
Correct Answer: Llywelyn the Great