All elongated objects, such as sticks, tree-trunks and umbrellas (the opening of these last being comparable to an erection) may stand for the male organ... Boxes, cases, chests, cupboards, and ovens represent the uterus... Rooms in dreams are usually women... Many landscapes in dreams, especially any containing bridges or wooded hills, may clearly be recognized as descriptions of the genitals.

The Standard Edition of the Complete Psychological Works of Sigmund Freud (ed. 1953)