Construction of Aberystwyth Castle began in 1277 after Edward I's defeat of Llywelyn ap Gruffydd. Work was not fully completed until 1289, although it managed to survive two Welsh uprisings.
In 1404, the castle fell to Owain Glyndwr and was occupied until being recaptured by cannon in 1408. During this occupation it was made an important seat of Welsh government. The castle also served as a prison to four French prisoners in 1415, while in 1637 a royal mint was established here.
Today's remains are the inner and middle walls of a once great castle, which would once have had a further, outer wall.
The current state of the castle is due to the order for it to be blown up in 1649, combined with the use of it as a convenient supply of stone for the construction of other buildings in the town!
Also located in and around the attractive and well-maintained castle grounds are a popular children's playground, picnic areas, a putting green and a crazy golf course
The castle once ranked among the greatest in Wales but today, lies entirely ruined
As early as the 14th century, the concentric fortress began to decay. By 1343, large portions of the main gateway and drawbridges, and the outer bailey were falling down. The closeness of the castle to the pounding sea causing much of the decay.
In 1404, Owain Glyndwr seized the crumbling fortress. Within a few years the English regained possession but after 1408, Aberystwyth Castle lost its strategic value to the monarchy, and only minor repairs were attempted. During the Civil War, the castle became a victim of Oliver Cromwell's ruthless policy of slighting because the garrison sided with the king, Charles I. Most of the castle stone was used by locals to build their homes.