Caernarfon Castle, overlooking the River Seiont and Menai Strait, looks today, much as it would have done when building was finished in 1330. With its massive curtain wall with different coloured bands, and its hexagonal towers, the design is reminiscent of the great Roman city of Constantinople.

Birthplace to the first English Prince of Wales, the tradition continues to this day, with the castle acting as the setting to the Investiture of Prince Charles as the Prince of Wales in 1969.

The castle is also home to the Regimental Museum of the Royal Welch Fusiliers.