Caernarfon Castle

Caernarfon was never just a fortress - begun in 1283, it was Edward I's propaganda in stone, its polygonal towers and bands of coloured masonry deliberately echoing the Theodosian walls of Constantinople to dress the English king in imperial Roman clothes. The great Eagle Tower, once crowned with carved eagles, anchors a curtain wall that still presents one of medieval Europe's most formidable silhouettes, mirrored in the water where the River Seiont meets the Menai Strait. Edward's son - the future Edward II - was born here in 1284 and became the first English Prince of Wales, and the castle has staged the investiture ceremony in modern times, most famously in 1911 and 1969. Inscribed by UNESCO in 1986 with Conwy, Harlech and Beaumaris, it pairs battlement walks and tower climbs with the Royal Welch Fusiliers Museum inside, and the walled town at its feet keeps a salty, Welsh-speaking everyday life.

What you actually see

• The Eagle Tower - the banded, triple-turreted showpiece above the river mouth.
• The polygonal walls - Constantinople quoted in Welsh stone.
• The investiture ground - the ward where Princes of Wales are proclaimed.
• The Fusiliers Museum - the regimental collection within the towers.

When to go

April to October for full opening and strait-side light; late afternoon warms the banded stone beautifully. Summer holidays bring the crowds - first entry is calmest.

Honest expectations

Expect magnificent shells rather than furnished rooms, and lots of steep spiral stairs to earn the views. The town's narrow streets fill fast in season and parking is tight. Caernarfon is proudly Welsh-speaking - hearing the language everywhere is part of the visit.

Nearby

Snowdonia's passes climb inland; Anglesey lies over the strait and Conwy along the coast.