West Usk Lighthouse
Quite close to the lighthouse are palatial Tredegar House (lake and craft shops in its grounds) and romantic little Castell Coch ('the red castle').
Also well worth visiting are the Roman city of Caerleon, and the castles of Caldicot, Chepstow, Raglan, Cardiff, & Caerphilly. Check their websites for events.
Other places include Tintern Abbey, Comeston Lakes and Medieval Village,Parc Bryn Bach, Rhondda Heritage Park, Techniquest, Big Pit, Llanciar Fawr Manor, Cwmcarn Forest Drive, Dyffryn Gardens and Arboretum, National Museum Cardiff, St. Fagans National History Museum, and lots more.
Both the Usk Valley, the Brecon Beacons and the Mumbles are scenic and within easy drive. Experience the island of Flat Holm, 50 minutes crossing from Cardiff Bay.
We also have Dewstow Gardens & Grottoes, which were created in 1895 but were buried and forgotten for over 50 years! They were rediscovered in 2000.
Other Attractions for families include Cardiff Bay which also has a Techniquest, The Welsh Folk Museum off Junction 33, M4. The Big Pit near Pontypool, Green Meadow Farm near Cwmbran, both off Junction 26.