Geograph - photograph every grid square

This building stands close to the north-bound carriageway of the A1 - so close that from a passing vehicle you get no more than a fleeting glimpse. The building has an oddly threatening look to it - largely due to the dark stone (Northamptonshire ironstone?) of which it is built - but is of considerable architectural interest. A stone over the main entrance gives the date of construction as 1906, accompanied by the letters 'BWB' - which, at a guess, must stand for Bedfordshire Water Board.

At the time of this visit the building did not appear to be in day-to-day use.