Garden View

The National Botanic Garden of Wales is in Llanarthney, in the River Tywi valley. It is both a visitor attraction and a centre for botanical research and conservation. The centrepiece is the Great Glasshouse, the world's largest single-span glasshouse at 110 m long and 60 m wide. It stands virtually on the site of Cockerell's mansion, the new Middleton Hall.

Tip: Look out across the restored eastern view towards Paxton's Tower, which was designed to be seen from the mansion's east side.

Carreg Cennen Castle stands on a high rocky outcrop above the River Cennen, near the village of Trap and four miles south east of Llandeilo. It sits within the Brecon Beacons National Park and is cared for by Cadw. The castle you see today was probably built by John Giffard and his son after Edward I's conquest of Wales.

Tip: The castle is reached by a steep climb up the hill from Castell Farm, near the car park, so wear sensible footwear.

Carmarthen Castle is a ruined medieval fortress in the county town of Carmarthen, on a high terrace overlooking the tidal River Towy. It began as an early 1100s timber motte and bailey, was rebuilt in stone and was captured, destroyed and rebuilt many times. Owain Glyndŵr took it in 1405, and Henry VII's father, Edmund Tudor, died here as a prisoner in 1456.

Cardigan Castle overlooks the River Teifi in the town of Cardigan. The site dates back to the late 11th century and was rebuilt in 1244. Rhys ap Gruffydd rebuilt it in stone, and in 1176 the first recorded eisteddfod was held here. After years of decay, it was restored and opened to the public.

Tip: There is no on-site parking for day visitors, so use the car park at the bottom of Quay Street, a minute's walk away.

The Boathouse in Laugharne is where Dylan Thomas lived with his family between 1949 and 1953. Set in a cliff overlooking the Tâf estuary, it is now a museum run by Carmarthenshire County Council. The interior has been returned to its 1950s appearance, with a recording of Thomas's voice playing in the background, and it holds memorabilia and some original furniture, including his father's desk.

Tip: Visit the writing shed close to the main house, where Thomas did most of his writing, and look across the estuary that inspired "Over Sir John's Hill".

Aberystwyth Castle is a Grade I listed fortress on the Ceredigion coast, begun by Edward I in 1277 during the first Welsh war. It was built as a diamond-shaped concentric castle, with a twin-towered gatehouse and towers at each corner, and was finished in 1289.

Tip: Bring a windproof layer, as the castle sits right by the sea and the Welsh coast can be breezy and wet.

Kidwelly Castle (Castell Cydweli) is a ruined castle overlooking the River Gwendraeth and the town of Kidwelly in Carmarthenshire. It began as a Norman earth and timber ringwork in the early 12th century, and the semicircular outer ditch still survives.

Tip: Look for the inner ward's four towers, which were raised in height in the 1390s to overlook the outer ward.