BARDSEY ISLAND
Ynys Enlli (Bardsey Island) or the Island of the Tides, sea bird sanctuary and home to grey seals, is just one of Llyn's many notable wildlife sites. In the Middle Ages pilgrims would come to visit Bardsey, the Isle of 20,000 saints, just off Aberdaron, at the tip of the peninsula and Legend has it the Merlin, of Arthurian fame, lies buried there in a suspended animation on Bardsey, ready to awake when King Arthur returns to Britain. Three pilgrimages to Bardsey were considered the equivalent of one to Rome.

ANGLESEY
The Isle of Anglesey is linked to the mainland by the handsome Menai Straits Suspension Bridge. Beaumaris has a 13th century castle and many other fine buildings in its historic town centre.

ST. TUDWALS ISLANDS
St Tudwal's Islands are a small archipelago of two islands lying south of Abersoch St Tudwal's Island West and St Tudwal's Island East plus the Carreg y Trai rocks or half tide rocks as they are also called.

On St Tudwals East are the remains of a monastic settlement and Priory. which was excavated at the start of the 20th Century and shards of roman pottery were found. According to tradition, Saint Tudwal lived on the islands in the 6th century. It is said that it was once possible to walk from Ynys Fach (the smaller of the two, and the nearest to the shore) to Trwyn yr Wylfa on the mainland at a time of very low tide.

A Trinity House lighthouse was erected on St Tudwals West in 1877. The site of the lighthouse was purchased by Trinity House in 1876 for the sum of £111, and the construction of the tower and dwellings completed the following year. Father Henry Bailey' Maria Hughes and his followers attempted to re-establish a monastic society, but their monastery was destroyed in 1887 by an enormous storm.

In 1922 the light in the lighthouse was converted to acetylene operation and was operated by means of a sun valve. This mechanism, which was invented by the Swedish lighthouse engineer, Gustaf Dalen, consists of an arrangement of reflective gold-plated copper bars supporting a suspended black rod; when lit by the sun the black rod absorbs the direct heat and that reflected from the other bars and expands downwards thereby cutting off the supply of gas.
Following the introduction of the acetylene equipment the lighthouse was demanned and the keepers dwellings next to the tower subsequently sold in 1935.
St Tudwal's Lighthouse was modernised and converted to solar powered operation in 1995

FARMING
Llyn's farming pattern is of small-scale, traditional, family farms raising sheep and cattle with dairying on pockets of better pasture.

The most striking feature of the Llyn countryside is the numerous stonewalls and hedgerows that surround the fields and country lanes. Farming practice here, whilst enhanced by modern machinery, has had little impact on the topography of the area. Sheep farming is still the main agricultural pursuit and modern methods have had minimal adverse impact on wildlife. The hundreds of miles of country lanes are much as they were generations ago. The agricultural interior is bordered on three sides by windswept cliffs, moorland, or coastal sand dunes.