Soaring above Lisbon, the skeletal Convento do Carmo was all but devoured by the 1755 earthquake and that's precisely what makes it so captivating. Its shattered pillars and wishbone-like arches are completely exposed to the elements. The Museu Arqueológico shelters archaeological treasures, such as 4th-century sarcophagi, griffin-covered column fragments, 18th-century azulejo (hand-painted tile) panels and two gruesome 16th-century Peruvian mummies.