They walked past thin columns of water at the entrance into an open space, where various objets--an oversize ceramic head and an eye-catching blue glass vessel, for example--sat among high-tech showers, whirlpools, sinks and an oval-shaped toilet, all displayed on pedestals like museum pieces, the better to bring in customers.

FORBES: Magazine Article

Among the unique objects which point to the presence of Africans on the military frontier, is a 2nd Century AD blue glass mould-blown vessel in the form of an African man's head.

BBC: NEWS | UK | England | Tyne/Wear | Romans 'were not colour prejudiced'