Factfile: York's history detailed in Minster's new Undercroft

Many aspects of York's development are documented in the new Undercroft exhibition at the city's Minster including:

• The Romans (71-410AD) - From the first barracks to Constantine the Great who ruled the Roman Empire from York. Glass floors show Roman walls below visitors' feet.
• The Anglian and Anglo-Saxons (410-866AD) - Following the Roman withdrawal new archaeology shows the city thriving with a Royal Mint.

• The Vikings (From 866AD) - The land is gifted to the church by a Viking lord Ulf whose elephant tusk horn is now on display.
• The late Saxons and early Normans - The building of the first Minster whose foundations are still visible.
• The present day - York Minster regarded as an international icon.

The final section of the Undercroft is the Treasury where original ceremonial items that have been collected over centuries and which are still used today are put on the display.