From Llandudno: Snowdonia National Park & Three Castles Tour

The day begins at the Great Orme — the 207-metre limestone headland that defines Llandudno's western horizon and juts into the Irish Sea between Conwy Bay and the open water toward Anglesey. A photo stop at the summit or lower viewpoints gives the group an overview of the North Wales coast before heading west and south into the Conwy valley. The Great Orme contains one of the most significant Bronze Age copper mines in the world, with 4,000-year-old tunnels accessible via a separate visitor attraction not included in the tour.

First main castle stop: Conwy Castle and the medieval town walls. Entry to both Conwy Castle and Plas Mawr is confirmed included in the GYG Includes list. Conwy Castle was built by Edward I between 1283 and 1289, following his first Welsh campaign, as the anchor of a new English-planted town at the mouth of the Afon Conwy. The castle's eight massive round towers and the 1.3km circuit of town walls — all built simultaneously as a single integrated fortification — are among the most complete medieval urban defences anywhere in the British Isles and part of the UNESCO inscription of 'Castles and Town Walls of King Edward in Gwynedd' (1986). Plas Mawr, built in 1576–1585 for the Elizabethan merchant Robert Wynn, is one of the best-preserved Elizabethan town houses in Wales, its original plasterwork decorations largely intact. Note: Conwy Castle is occasionally closed for private events; checking current availability at cadw.gov.wales before the tour is advisable.

A 20-minute guided stop at a location described in the GYG listing as a 'secret stop' — the guide reveals the destination on the day. This is a confirmed guided stop with narration, not a simple photo break; its identity is withheld from the tour description by design. Past participants' reviews suggest it is a scenic or heritage location in the Conwy valley or on the road toward Bethesda.

Lunch break at Penrhyn Quarry, near Bethesda in the Ogwen valley — a former slate quarry and one of the largest man-made holes in the world at its 19th-century peak. The Welsh Slate Museum at Llanberis (not at this stop) is a UNESCO-inscribed site representing the slate-quarrying industry that defined the economic and cultural landscape of North Wales for two centuries; Penrhyn itself, with the quarry terraces and associated Penrhyn Castle (a 19th-century Norman Revival castle not included in this tour), represents the same industry. Lunch is at own expense.

The tour traverses the Nant Ffrancon Pass — the glacial valley between Bethesda and the Ogwen valley floor, flanked by the Carneddau range to the north and Tryfan to the east, one of the most dramatically steep U-shaped glacial valleys in Wales. Llyn Ogwen, the lake at the head of the pass, provides a foreground for the cwm and cliffs above Ogwen Cottage. The route continues through the heart of Eryri (Snowdonia) National Park toward Llanberis.

Second castle stop: Dolbadarn Castle at Llanberis, at the foot of Yr Wyddfa (Snowdon) between Llyn Peris and Llyn Padarn — the two largest natural lakes in Wales. Unlike Conwy and Caernarfon, which were built by Edward I as instruments of English conquest, Dolbadarn is a native Welsh castle built by the princes of Gwynedd, likely founded by Llywelyn the Great (Llywelyn Fawr) in the early 13th century. The round tower keep — the most distinctive feature of the castle and one of the finest examples of Welsh military architecture — follows a form more commonly associated with French castle design than with English practice, suggesting the Gwynedd princes' familiarity with continental military architecture. Dolbadarn is most famous as the place where Owain Goch ap Gruffudd, the brother of Llywelyn ap Gruffudd (the last native Prince of Wales), was imprisoned by his brother for over 20 years. Entry to Dolbadarn Castle is free (Cadw managed site). A future standalone castle page on the site is planned for Dolbadarn.

A stop at or near Pen-y-Pass — the mountain pass at 359 metres that serves as the starting point for the two most popular routes to the summit of Yr Wyddfa (Snowdon, 1,085m): the Pyg Track and the Miners' Track. The viewpoint provides a frame for the summit and the ridgelines of the Snowdon massif. Yr Wyddfa is the highest mountain in Wales and England and the most-climbed mountain in the UK after Ben Nevis.

Third and final castle stop: Caernarfon Castle, the most architecturally and politically ambitious of Edward I's Welsh castles, built from 1283 alongside the town of Caernarfon on the Menai Strait. Entry is confirmed included. Caernarfon was designed to serve as the seat of government for Wales as well as a military fortress; the distinctive banded masonry of alternate dark and light stone, and the polygonal rather than round towers, set it apart from the other Edwardian castles and reflect the architect's deliberate evocation of the walls of Constantinople. Edward I's son, the future Edward II, was born at Caernarfon in 1284 and presented to the Welsh people as the first English Prince of Wales. The castle was the site of the investiture of Charles, Prince of Wales in 1969. Part of the UNESCO inscription 'Castles and Town Walls of King Edward in Gwynedd' (1986). Return drive to Llandudno.