In 1925, adventurer Col. Percy Fawcett disappeared while searching for a city of gold in Brazil.
An intimate portrait of the American hero features interviews with Armstrong's family and friends.
The Island of Shikoku in Japan features a 750-mile Buddhist pilgrimage route, temples and shrines.
US military members visit the Catholic shrine of Lourdes in southwest France in search of healing.
Jewish and Christian pilgrims visit Israel. The Jesus Trail, Sukkot and more are showcased.
Carved from 100 million pounds of stone, soaring effortlessly atop a spider web of masonry, Gothic cathedrals are marvels of human achievement and artistry. But how did medieval builders reach such spectacular heights?