Dvblinia. This is an exhibit of Dublin's history which explains what life was like in Dublin in medieval times. It starts with life around 1170 and goes up to about 1540. It is in a part of Christchurch Cathedral and a ticket gets you into the cathedral as well.
Dublinia is a museum showing life in Dublin in Viking and medieval times. Definitely a must see attraction!
At Dublinia you can experience life in the Middle Ages.
They show you the artefacts, customs, and a scale model of the city at the 16th century.