Built in the 16th Century Eastbury Manor is our very own listed, National Trust property (and it's just a five minute walk from my flat). Things to love about it: the wonderful exterior, the oak turret stairs and the magnificent fireplaces. (You could roast a whole human let alone a pig in the fireplace in the tearoom).
Intriguingly, Daniel Defoe wrote in 1726 "a little beyond the town [Barking], on the road to Dagenham, stood a great house, ancient and now almost fallen down, where tradition says the Gunpowder Plot was at first contrived and that all the first consultations about it were held here". There's absolutely no evidence to support this and the idea is commonly attributed to local myth but I quite like it!