Drowning by Numbers*
* I haven't seen The Cook, The Thief, His Wife, Uncle Tom Cobbley And All yet
You've mentioned the two most accessible Greenaway films (DBN is my favourite film. TCTTHWAHL suffers IMO from its one-set staging, although there are some marvellous tracking shots). The Baby of Macon is, apparently, a very bad experience indeed, and I haven't seen it, but Prospero's Books is good if you're not interested in plot.
Drowning by Numbers was excellent (and has Juliet Stephenson in it...) Cook, Thief, Wife is good and even better if you like Dutch/Flemish painting. Richard Bohringer is a bit wasted in it though.
I saw "Baby of Macon" at our local art house. I thought it was beautifully done. Lots of people walking out midway though and my neighbor even wrote a letter of complaint to the management. Something to offend everybody I think...
Not a film but there was a TV series that scared me badly as a child. All I could remember about it was a boy & girl trapped in a house surrounded by rocks with glowing eyes
It wasn't until a few years ago that I found it had been called "Escape Into Night", since filmed as "Paperhouse"