Eureka, California
"Eureka" received its name from a Greek word meaning "I have found it!" This exuberant statement of successful (or hopeful) gold rush miners is also the official motto of the State of California. Eureka is the only U.S. location to use the same seal as the state for its seal.
Europe
In classical Greek mythology, Europa (, "Eurṓpē") is the name of either a Phoenician princess or of a queen of Crete. The name contains the elements εὐρύς ("eurús"), "wide, broad" and ὤψ ("ōps", gen. ὠπός, "ōpós") "eye, face, countenance", hence their composite "Eurṓpē" would mean "wide-gazing" or "broad of aspect". "Broad" has been an epithet of Earth herself in the reconstructed Proto-Indo-European religion and the poetry devoted to it. For the second part compare also the divine attributes of "grey-eyed" Athena (γλαυκῶπις, "glaukōpis") or ox-eyed Hera (βοῶπις, "boōpis").