Welcome to DEWA...
The actual Dewa Roman fortress is now buried under modern day Chester, but it lives on through the Dewa Roman Experience. Most museums have exhibits that are available to the visitor, but here we have an approach that is completely different. Dewa entrance  
Excavations
On entering, you go into the Roman Galley where there are exhibits of Roman Chester, many of which are 'hands on' type, where you can handle items such as pottery, try on a suit of Roman armour, fire the catapult and design mosaics.