Greek mythology subterranean house of Hades and his predecessors, home of the dead. Influences from other cultures always afforded new themes. According to Classical-era mythology, after the overthrow of the Titans, the new pantheon of gods and goddesses was confirmed. Among the principal Greek gods were the Olympians, residing on Mount Olympus under the eye of Zeus. (The limitation of their number to twelve seems to have been a comparatively modern idea.) Besides the Olympians, the Greeks worshipped various gods of the countryside, the satyr-god Pan, Nymphs (spirits of rivers), Naiads (who dwelled in springs), Dryads (who were spirits of the trees),
Greek mythology in popular culture of the god of medicine, Asclepius. Today's medical professionals hold a similarly honored position as did the healer-priests of Asclepius. The American colonial revolutionary, Thomas Greenleaf, subtitled his newspaper ""The Argus"" after the mythological watchman and took the slogan "We Guard the Rights of Man." The Pegasus appears frequently on stamps, particularly for air mail. In 1906, Greece issued a series of stamps featuring the stories from Hercules' life. Australia commemorated the laying of an underwater cable linking it to the island of Tasmania through a stamp featuring an image of Amphitrite. The United States military has used Greek mythology