Penrhyn Castle
Bangor, Gwynedd LL57 4HN
Tel: 01248 371337 (Infoline); 01248 353084
This neo-Norman fantasy castle sits between Snowdonia and the Menai Strait. Built by Thomas Hopper between 1820 and 1845 for the wealthy Pennant family, who made their fortune from Jamaican sugar and Welsh slate, the castle is crammed with fascinating things such as a one-ton slate bed made for Queen Victoria. The stable block houses an industrial railway museum, a countryside exhibition, a railway model museum and a superb dolls museum displaying a large collection of 19th- and 20th-century dolls. The 18.2ha (45 acres) of grounds include parkland, an extensive exotic tree and shrub collection and a Victorian walled garden

Plas Yn Rhiw
Rhiw, Pwllheli, Gwynedd LL53 8AB
Tel: 01758 780219
A small manor house with lovely grounds down to the sea. The house is partmedieval with Tudor and Georgian additions.

Segontium
Caernarfon, Gwynedd
Tel: 01286 675625
These remains of a Roman fort are a World Heritage site located on the
outskirts of Caernarfon. There is museum containing relics found on the site. NT members may be charged for entry to the museum.

Skenfrith Castle
Skenfrith, nr Abergavenny, Monmouthshire NP7 8UH
Tel: 01874 625515
These remains of an early 13th century fortress built beside the River Monnow once commanded one of the main routes from England to Wales. The fortress includes a keep and curtain wall with towers.