Aberystwyth Castle

Aberystwyth Castle is a late-13th-century fortress ruin perched on a clifftop overlooking Cardigan Bay on the Welsh coast. Edward I of England ordered its construction from 1277 as part of his ambitious iron ring of castles designed to consolidate the conquest of Wales — a network now considered one of medieval Europe's most systematic military building campaigns. In the early 15th century, the Welsh resistance leader Owain Glyndŵr seized the castle and briefly held a Welsh parliament within its walls, making it a charged site in the history of Welsh self-determination. The ruin, protected as a Grade I listed building and Scheduled Monument, is freely accessible today; the surviving twin-towered gatehouse and curtain-wall arches frame sweeping views across the sea and the Rheidol estuary, particularly striking at sunset.