Croxley Great Barn, near Rickmansworth, Hertfordshire is one of the surviving barns originally built for to St. Alban’s Abbey towards the end of the 13th century.
Having been a working barn until the 1960s, it is no longer in use and has very limited access from the school which now has ownership. Extensively restored in 1972, it remains sound but in poor repair and is considered 'at risk', and local action to consider and put forward options is in hand.
The Three Rivers Museum has a useful web page for it:
The barn has a number of unusual features including sling-braces (opposite), a contemporary wagon porch and no exit opposite the entrance to the midstrey. (The threshing floor is reputed to be large enough to allow a cart to be turned round and exit through the porch where it entered)."
