Finds from across the nation have been excavated by experts and are displayed here in one place.
Although mainly concentrating on artefacts dating from the Iron Age, there is also a reconstructed loom which would have been used for weaving, as well as interactive on-screen maps showing the locations of important finds.
The display includes the elaborate and impressive Capel Garmon fire-dog (right), which was found in a bog, as well as the Llyn Fawr collection, dating back to 700BC.
This includes two large reconstructed cauldrons, bronze horsegear and a sickle - the oldest British-made object of iron.
The Tal-y-Llyn hoard includes some impressive decorated plaques comprising human heads and triskele patterns.
The collection also holds some of the earliest experiments with iron, including a sickle, as well as smaller items such as tankards and chariot pieces, excavated from Llyn Cerrig Bach, and artefacts from Trer Ceiri, Y Breiddin and Castell Henllys.
Directions: Located in Cardiff city centre with plenty of parking available.
If coming south from the A470, take the A469 North Road. Turn left onto Boulevard de Nantes after passing the Royal Welsh College of Music and Drama on your right and City Hall Road on your left.
At the first traffic lights on the Boulevard de Nantes, turn left onto Park Place. Take the first left on Park Place and youll see the National Museum of Wales on your right. Free entry to the Museum.