Anglesey Sea Zoo

Trefarthen is a village in the community of Llanidan, Ynys Môn, Wales, which is 125.6 miles (202.1 km) from Cardiff and 209.2 miles (336.7 km) from London.Of historical and archaeological interest are a Georgian mansion and the possible site of a 16th-century house.

Perthi-Duon Burial Chamber is a Neolithic dolmen located to the west of Brynsiencyn, Anglesey, Wales.

Llanidan is a community in the south of Anglesey, Wales which includes the village of Brynsiencyn (Welsh pronunciation). The parish is along the Menai Strait, about 4 miles north-east of Caernarfon (across the strait). The parish church of St Nidan is near the A4080 highway, a little to the east of Brynsiencyn. The ruins of an earlier parish church survive.

Afon Seiont (Welsh, meaning River Seiont in English) is a river in Gwynedd, Wales which runs into the Menai Strait. Its source is the outflow of Llyn Padarn near Llanberis, and it flows out in a generally northwest direction. Between the outflow and the village of Llanrug it is known as the Afon Rhythallt, changing its name just after the village. Its mouth is in the town of Caernarfon, forming a natural harbour as it flows out into the Menai Strait. The Afon Nant Peris provides the main inflow into Llyn Peris which then drains into Llyn Padarn with the addition of the waters of the Afon Arddu which drains the northern slopes of Snowdon. The name of the Roman fort of Segontium, near Caernarfon, is based on the Latinised form of the name 'Seiont'. In the Brythonic language *seg-ontio translates as "strong place".

Caer Lêb is a Roman and mediaeval site on the Welsh island of Anglesey, west of Brynsiencyn. Its name means "Leaven Castle". It is a low-lying site near the Afon Braint with a double row of pentangular banks (some parts now levelled) and marshy ditches. The original entrance was on the east, other gaps are modern and caused by animals. Based on the excavation of a similar site elsewhere on Anglesey, it may date from the 2nd century BCE.Excavations in 1865 found structures within the enclosure, rectangular buildings on the east and a circular one on the south. Nothing of these can now be seen on the ground. Pottery from the 2nd century to the 4th century was found, and on the north side a layer of periwinkle shells and a mediaeval coin, under a layer of peat.There is a parking area, sufficient for 4-5 cars, by the roadside. A footpath goes southwest on a low ridge, some 2 metres above the Afon Braint, from Caer Lêb over stiles, past the site of the former stone circle of Tre'r Dryw Bach, some 800 metres to Castell Bryn Gwyn and on to the Bryn Gwyn stones and the A4080. 500 metres north-west along the road, by Pont Sarn Las (Green Causeway Bridge), the foundations of three round houses may be visible after a dry summer. A large settlement was recorded in the 19th century, and destroyed in the 1870s by agricultural improvement.

Caernarvon railway station was a station on the former Bangor and Carnarvon Railway between Caernarfon, Gwynedd and Menai Suspension Bridge near Bangor. The station was closed to all traffic in January 1972. The station has since been demolished and the site redeveloped.

The Llŷn Coastal Path is a waymarked 146-kilometre (91 mi) long-distance footpath running along the coast of the Llŷn Peninsula from Caernarfon to Porthmadog in Gwynedd, north-west Wales. A large part of the Llŷn Peninsula is designated an Area of Outstanding Natural Beauty.Devised and implemented by Gwynedd County Council and the Countryside Council for Wales, the path opened in 2006, though it has since been changed and improved. This work is continuing as part of the path's integration into the Wales Coast Path, an 870-mile (1,400 km) long-distance walking route around the whole coast of Wales from Chepstow to Queensferry.

Lôn Eifion is part of Lôn Las Cymru, the Welsh National Cycle Route, which is about 400 km (250 mi) long. Lôn Eifion is the section which runs for 20 km (12 mi) from Caernarfon to Bryncir along most of the former Caernarfon to Afon Wen line. This line was that of the Carnarvonshire Railway (later LNWR and London, Midland and Scottish Railway), and joined with the Cambrian Coast Line at Afon Wen. Running alongside for part of the way is the trackbed of the old Nantlle Tramway, along which horse-drawn trams carried slates from the quarries in the Nantlle Valley to the port at Caernarfon from where they were exported. From Caernarfon to Llanwnda Station the Lôn Eifion runs alongside that of the Welsh Highland Railway. At the Llanwnda station the Lon Eifion continues south over Glanrhyd to the A487/A499 Pwheli/Porthmadog roundabout, which prior to the Penygroes bypass, was the site of the old Llanwnda Rail Station on the Carnarvonshire Railway. Crossing the roundabout you join the Llanwnda - Groeslon section of the route Lon Eifion, passing on your right the railway cottages built to serve the railway station. The route continues alongside the A487 before passing underneath the road bridge at Afon Llifon before continuing to the village of Groeslon. Crossing the road at the Tafarn Pennionyn the Lon Eifion continues on the East side of the A487 until crossing over again via a foot bridge. Once over the foot bridge the Lon Eifon cuts through woodland heading due South, passing the rear of Inigo Jones Slate Works and further on to open field land with views to the West of Pontllyfni and Aberdasach and The Rivals until reaching another footbridge at the end of Clynogg Road and continuing down to the roundabout of A487/B4418. Continuing south the Lon Eifion continues to closely follow the A487 until vearing away and more South Westerly at Nebo. It continues on a much quieter and greener route along the old railway line through trees and farm land down to Bryncir.At Bryncir the cycle route deviates from the old railway line and heads westerly and steeply upward through a farm and on to single track road before heading south again into Cricceith.

The Black Boy Inn (or just Black Boy) is a hotel and public house in the Royal Town of Caernarfon in Gwynedd, Wales which is thought to date back to 1522, making it one of the oldest surviving inns in North Wales. It is within the medieval walls of Caernarfon, a few hundred yards from Caernarfon Castle.

Menai is the name of an electoral ward in the town of Caernarfon, Gwynedd, Wales. As the name suggests, it borders the Menai Strait. The ward elects councillors to the town council and Gwynedd Council.

Porth yr Aur is a Grade I listed 13th-century fortification in Caernarfon which forms part of Caernarfon Castle's medieval defences. Originally known as the West gate it was the main seaward entrance to the walled town. The building has been the home of the Royal Welsh Yacht Club since 1854. Porth yr Aur forms part of the Castles and Town Walls of King Edward in Gwynedd UNESCO world heritage site. Construction began in 1283 at the same time as Caernarfon castle, both integral components of the city walls, and was completed by 1292.

Ysgol Syr Hugh Owen is a bilingual comprehensive secondary school for pupils aged 11–18. The school is situated in Caernarfon, Gwynedd, Wales. The school was established in 1894, the first to be built under the Welsh Intermediate Education Act 1889, which was heavily influenced by the educator Sir Hugh Owen, after whom the school was named. As of 2022, there were 937 pupils enrolled at the school. Its current headteacher is Paul Mathews Jones. It serves the town of Caernarfon and the nearby villages, which include; Bontnewydd, Caeathro, Y Felinheli, Llandwrog, Rhosgadfan and Rhostryfan.Welsh is the school's main language of communication and administration. All subjects, except Welsh and English, are taught to all pupils using both languages. According to the latest Estyn report, 90% of pupils speak Welsh with their families and 92% are fluent in the language. The school claims that 98% of pupils were fluent in Welsh in 2016.There is also a sixth form, which enables students to stay at the school for a further two years instead of having to transfer to college.