Analysis of placental histopathology lesions may assist in a better understanding of the underlying mechanisms that lead to different clinical phenotypes in complicated pregnancy. Categorization of placental lesions provide us with a tool to determine the placental reaction and adaptation to abnormal placentation that occurs during pregnancy complications. Placental pathology has traditionally been the "black box" of pregnancy. The associations between placental histopathology and pregnancy complications have been studied comprehensively. After more than a decade of experience in collecting detailed placental pathological reports from various pregnancy complications, we looked for placental characteristics that could serve as predictors in patients with recurrence of pregnancy complications. It was found that in cases of preeclampsia, intrauterine growth restriction and preterm birth, prediction models involving placental pathology performed better than models based only on clinical factors. The placenta histopathology reports should be used not only as records from the "black-box of pregnancy" but more as records from the "crystal ball" for future pregnancies.