Grey concrete ground, grey wire, very often grey skies, it was just a lot of grey.

BBC: Northern Ireland

The grim, grey concrete edifice dominates the road west out of the centre of Cardiff.

BBC: State of Play 4 - Labour

In the first-floor gallery, free-standing marble statues of men, women and horses glow against a background of grey concrete walls and columns.

ECONOMIST: A new tribute to the Parthenon

Driving through the gates of the space town, Star City looks like nothing more than a collection of grey concrete homes, seemingly frozen in the 1960s.

BBC: The dated future of Russia��s Star City

It is mounted at eye level on a grey concrete wall, an arresting display that could almost be an installation in a contemporary art show.

ECONOMIST: A new tribute to the Parthenon