Cardiff Castle
Victorian Gothic mansion and medieval castle. Cardiff Castle was involved in the battles between the Welsh and the Anglo-Normans, and was attacked many times during the 12th century; it was even stormed in 1404 during the revolt of Owain Glyndŵr.
Wales Millennium Centre
The Wales Millennium Centre features opera, ballet, modern dance, and theater. It comprises one large theatre and two smaller venues, as well as shops, restaurants, and bars.
National Museum Cardiff
Admission to this museum and art gallery is free (donations are requested). Exhibits include natural history, botany, zoology, archaeology, and more.