Llŷn Peninsula and Caernarvon trail/Llwybr Caernarfon a Phenrhyn Llyn
Criccieth Castle/Castell Cricieth
This Welsh castle is located on promontory overlooking Tremadog Bay. Built in the early thirteenth century, it has a commanding view over the surrounding area. It is a spectacular site with a large twin towered gatehouse and ruined walls. It has captured by the English but fell to Owain Glyndŵr in 1404 who had the castle destroyed. It is located at Criccieth, off the A497 west of Portmadog.
Castell Carn Fadrun and Iron Age Hill Fort
This is a twelfth century Welsh stone castle and is set within the remains of a large Iron Age hillfort. The hill fort is made up of two enclosures, with the larger surrounding the smaller. There are foundation remains of round and rectangular buildings in and outside of the enclosure from the Iron Age. The later castle is made up of the remains of a dry stone wall enclosure and is at the highest point of the hill. The site is located on the Llŷn Peninsula, off the B4415 about five miles west of Pwyllheli.
Garn Boduan Hill Fort
This is an Iron Age hill fort on the Llŷn Peninsula comprising of a hill top enclosure made up of two stone wall surrounds. The site is off the B4354 and A497 southeast of Nefyn.
Tre'r Ceiri Hill Fort
This is an Iron Age hill fort on the east summit of the three peaks of Yr Iefl. It covers an area of about 950 feet by 340 feet with as many as 150 hut circles. The earliest fort enclosed an Early Bronze Age cairn and the site was also occupied into the Romano British period. The site is located between Llithfaen and Llanaelhaearn of the B4417 on the Llen Peninsula.
Dinas Dinlle Hill Fort
The site of this hill fort is at the north end of Llŷn Peninsula about six miles to the south east of Caernarfon and some fourteen miles north of Pwllheli. The cliff above the coastal village of Dina Dinlle is called Boncan Dinas and is the site of the Iron Age hill fort. The banks of the fort can still be clearly seen although part of the site has been subject to coastal erosion.
Dolbadarn Castle/Castell Dolbardarn
This castle built by Llewellyn Fawr is located above Llŷn Padarn Lake at the base of Snowdon. The remains of the castle include a round tower and stone walls. The site is located via a footpath from the A4086 at Llanberis east of Caernarfon.
Caernarfon Castle/Castell Caernarfon
This castle is located about eight miles southwest of Bangor at the southern end of the Menai Straight between north wales and Anglesey and is seen as one of the most impressive in Wales. Construction began in 1283 and it is on the site of a previous Roman fort and Norman Motte and Baille castle. Being a mixture of castle and royal palace the castle contained nine towers within two curtain walls and two substantial gatehouses. The towers provided significant accommodation and one the most spectacular is the Eagle Tower which is topped by three turrets. Caernarfon is on the A487.