We are so familiar with the features of our homes, the myriad little decorative details, that we have forgotten how to see them. We might look at a church, read a book or watch a film and attempt to understand its symbolism and its references, but we rarely look at our homes in the same light. Yet from the most ordinary apartment to the most extravagant mansion, every home is a deep well of echoes. Windows to wardrobes, fireplaces to door knockers,...