Adjacent to the Liverpool Arms is a 1970s edifice called Centurion house which stands on the site of the old Northgate brewery. The Northgate was Chester’s biggest and most successful brewery. It was built in the mid 19th century and survived until the late 1960s, although by then it was being run by Warrington based brewer Greenall Whitley. When it was demolished, the mosaic from the foyer of the main offices was rescued and re-assembled as part of the terrace behind the office block. If you want to see it, head to the Liverpool Arms then try and find your way up the back passage.
(More on the Northgate Brewery can be found here at the excellent chesterwalls.info website)